2A553A 2011 VOL 3

1. (403) A cross wind causes a falling bomb to

Hit the target

Overshoot the target

Fall short of the target

Fall left or right of the target

2. (403) The preplanned flight route can be described in the

Action point table

Release table

Gravity table

Stores table

3. (405) What line replaceable unit consists of a gyro-stabilized platform, platform electronics,navigation computer, input/output functions, and power supply?

Inertial navigation unit

Doppler velocity sensor

Terrain-following avionics control unit

General navigation avionics control unit

4. (406) During the air align mode of the inertial navigation unit, how should the aircraft be flown?

With a slow ascent at a constant velocity

With a slow descent at a constant velocity

Straight and level, and at a constant velocity

As normal; no special considerations are necessary

5. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is higher than the transmitted frequency?

They are a constant distance away from each other

The aircraft is not reflecting any of the radar pulses

The aircraft is flying towards the transmitter/receiver

The aircraft is flying away from the transmitter/receiver

6. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is lower than the transmitted frequency?

They are a constant distance away from each other

The aircraft is not reflecting any of the radar pulses

The aircraft is flying towards the transmitter/receiver

The aircraft is flying away from the transmitter/receiver

7. (401) North on a compass rose is

0°

90°

180°

270°

8. (403) If the airspeed of the aircraft is too fast, a falling bomb

Hits the target

Overshoots the target

Falls short of the target

Falls to the side of the target

9. (403) Air resistance causes a falling bomb to

Lag

Lead

Fall rapid

Fall unpredictably

10. (431) HAVE QUICK radios resist jamming by

Frequency-hopping

Retransmission

Phase shifting

Encryption

11. (401) The polar axis is the

Axis about which the moon rotates

Axis about which the earth rotates

Circle equal distance from the poles

Circle formed by any plane that passes through the center of the earth

12. (406) What inertial navigation unit mode is about 45 minutes in duration?

Navigate

Air align

Precision align

Stored heading align

13. (411) Which component in a pulse-modulation radar set provides the voltages that operate the other radar components?

Antenna

Indicator

Transmitter

Power supply

14. (401) From the prime meridian west to the international dateline, meridians are assigned values of

0° to 90° east

0° to 90° west

0° to 180° east

0° to 180° west

15. (402) A vector diagram that shows the effect of the wind on the flight of an aircraft is called the

Flight path

Wind triangle

Navigation chart

Destination chart

16. (401) The prime meridian is the

Circle designated 0° latitude

Meridian designated the 180° meridian

Meridian passing through Greenwich, England

Circle equal distance between the north and south poles

17. (402) The effect of wind on an aircraft is

Slight

Negligible

Significant

Unimportant

18. (402) The sideward displacement of an aircraft by the wind is called

Yaw

Drift

Deviation

Groundspeed

19. (402) The rate of movement of an aircraft relative to the Earth's surface is called

Drift

Velocity

Airspeed

Groundspeed

20. (402) What is used to correct true heading and allow the aircraft to make good the desired true course?

Drift correction

Wind disbursement

Airspeed correction

Ground speed correction

21. (416) Which radar application is used to produce a pictorial map of the terrain?

Ground mapping

Terrain-following.

Terrain avoidance

Synthetic aperture radar

22. (405) Below what temperature does the modulator valve close to prevent over-cooling of the inertial navigation unit?

80°F

90°F

120°F

170°F

23. (405) What avionics multiplexing (MUX) data bus provides the path for the inertial navigation unit to communicate with the avionics control unit complex and, eventually, all other aircraft systems?

AMUX

BMUX

CMUX

DMUX

24. (411) Which component in a pulse-modulation radar system shapes the radio-frequency energy into a narrow beam?

Antenna

Indicator

Transmitter

Synchronizer

25. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when no frequency shift between them can be measured?

They are a constant distance away from each other

The aircraft is not reflecting any of the radar pulses

The aircraft is flying towards the transmitter/receiver

The aircraft is flying away from the transmitter/receiver

26. (432) When two signals are received simultaneously on the same operating net, the HAVE QUICK II radio automatically goes into conferencing by

Resetting the net number for communication

Setting the receiver to narrowband reception

Offsetting the second transmitter frequency by 25 kilohertz

Injecting a beat frequency to make both signals unintelligible

27. (401) In navigation, the primary reference is

0°

90°

North

The equator

28. (408) Which global positioning system component is passive, meaning it does not require power, adjustments, or controls to function?

Antenna

Receiver

Antenna amplifier

Antenna controller

29. (410) In a pulse-modulation radar system, the transmitter does not interfere with the receiver because the transmitter

Is turned off after each pulse

Shifts the frequency of the pulse

Transmits on a different frequency

Uses a different antenna than the receiver

30. (403) A head wind causes a falling bomb to

Hit the target

Overshoot the target

Fall short of the target

Fall left or right of the target

31. (404) Which is used to maintain accelerometer orientation in the inertial navigation system?

Summing unit

Computer

Integrator

Platform

32. (411) What is produced in the pulse-modulation radar system by heterodyning?

High-frequency

Very-low frequency

Very-high frequency

Intermediate-frequency

33. (415) Which radar altimeter mode is initiated when an insufficient amount of return video is present during the keyed automatic gain control gate?

Track

Standby

Ground map

Search/loss of track

34. (429) A very-high frequency frequency-modulated radio is mainly used on aircraft that

Contact Army ground troops

Use Air Force-controlled airfields

Contact airborne tankers for refueling

Are under the control of civilian air traffic controllers

35. Which system utilizes the equator as one fixed reference point and the Greenwich meridian as the other fixed reference point?

Aircraft landing

Inertial navigation

Instrument landing

Geographic coordinate

36. (401) From the prime meridian east to the international dateline, meridians are assigned values of

0° to 90° east

0° to 90° west

0° to 180° east

0° to 180° west

37. (404) The changing of position with respect to some other body is called

Speed

Motion

Velocity

Reference

38. (407) How many radio-frequency signals are transmitted from each global positioning system satellite?

One

Two

Three

Four

39. (408) Which global positioning system unit provides a display for the ARN–151?

Mount

Receiver

Indicator control

Antenna controller

40. (410) In which radar system is the transmitter turned on for short periods of time and off for long periods of time?

Beacon

Frequency-shift

Pulse-modulation

Frequency-modulation

41. What is formed on the surface of the Earth by any plane that passes through the center of the Earth and divides it into two equal parts?

Equator

Great circle

Parallel of latitude

Meridian of longitude

42. (402) On navigation charts, the lines that connect points of equal magnetic variation are called

Agonic

Isogonic

Variation lines

Deviation lines

43. (407) In the global positioning system, almanac data is transmitted to each satellite to update the navigation data message once every

6 hours

12 hours

24 hours

48 hours

44. (425) A receiving radio antenna receives radio-frequency signals by

Accepting and amplifying the minute current

Removing the radio-frequency carrier wave

Converting energy to magnetic and electrical fields of force

Electromagnetic fields impressing a voltage across the antenna, thus causing current to flow

45. (405) Which component is the central controller for the inertial navigation unit?

Navigation computer

Platform electronics

Stabilized platform

Power supply

46. (405) The indicators on the front of the inertial navigation unit are used to

Provide inputs during checkout

Allow adjustments to the inertial navigation unit

Identify malfunctions within the inertial navigation unit

Indicate the normal operation of the inertial navigation unit

47. (421) The ability of a radio receiver to reproduce weak signals is called

Reproduction

Sensitivity

Reception

Detection

48. (422) In a typical amplitude-modulated superheterodyne receiver, the process used to tune two or more circuits with a single control is called

Slug tuning

Ganged tuning

Parallel tuning

Staggered tuning

49. (428) If the external blower for an ARC–190 high-frequency radio system is overheating, it causes a receiver-transmitter fault and

Keeps the coupler from tuning

Reduces the external blower speed

Keeps the transmitter from functioning

Causes the receiver/transmitter fault light to turn off

50. (405) What line replaceable unit is the prime sensor for measuring motion and velocity, and establishes and maintains a measurable frame of reference on the B–1B?

Inertial navigation unit

Doppler velocity sensor

Terrain-following avionics control unit

General navigation avionics control unit

51. (407) Errors in the orbit and clock data of the global positioning system satellites are detected in the

Satellites

Monitor stations

Master control station

Global positioning system

52. (410) Which radar system can only detect objects approaching or moving away from the receiver?

Beacon

Frequency-shift

Pulse-modulation

Frequency-modulation

53. (428) In the ARC–190 high-frequency (HF) radio system, the HF coupler matches the impedance of the antenna to the receiver-transmitter in order to

Increase the voltage standing wave ratio

Give maximum power transfer

Increase transmitter selectivity

Increase receiver sensitivity

54. (405) Which is vital to the performance of the inertial navigation system?

Operating power

Operating pressure

Operating impedance

Operating temperature

55. (413) The voltage standing-wave ratio is determined by comparing the radar's

Reflected power to the transmitter power

Reflected power to the receiver sensitivity

Transmitter power to the receiver sensitivity

Transmitter power to the transmitter frequency

56. (427) What is the transmitted frequency when a high-frequency radio control is set to 27.5 megahertz (MHz), the signal is modulated by a 1000-hertz tone, and lower sideband mode is selected?

26.500 megahertz

27.499 megahertz

27.501 megahertz

27.600 megahertz

57. (431) Ultra-high frequency radios are primarily used for

Long-range communication

Direction-finding operations

Line-of-sight communication

Communication with civilian air traffic controllers

58. (408) The navigational system of the global positioning system has a time accuracy to

50 nanoseconds

100 nanoseconds

150 nanoseconds

200 nanoseconds

59. (409) When the operator initializes the global positioning system (GPS), what is provided to the GPS to begin satellite tracking?

Altitude, time, and speed

Position, altitude, and speed

Altitude, time, and almanac information

Position, time, and almanac information

60. (411) In a pulse-modulation radar system, the pulse repetition frequency is the number of pulses

That are received within 1 second

That are transmitted within 1 second

Transmitted during the listening time

That strike the target within 1 second

61. (413) The dimensions of a waveguide determine the waveguide's

Radiation loss and frequency

Frequency phase shift and power loss

Frequency and power-handling capability

Voltage standing wave ratio and power-handling ability

62. (408) The global positioning system has a three-dimensional position navigation accuracy of

160 meters

16 meters

1.6 meters

0.16 meters

63. (414) Which radar set line replaceable unit performs highly accurate electronic beam steering?

Radar set control

Radar transmitter

Radar data terminal

Low observable antenna

64. (416) Which radar application is used primarily as an aid to navigation?

Search

Ground mapping

Terrain-following

Terrain avoidance

65. (410) Which part of a radar set amplifies and converts a wave into a video signal?

Antenna

Receiver

Indicator

Transmitter

66. (414) The part of the radar set's low observable antenna that is addressed to steer the radiofrequency beam is the

Phase control modules

Radio-frequency roll resolver

Radio-frequency quadrant manifolds

Radio-frequency monopulse comparator

67. (417) The frequencies created by the heterodyning process in an amplitude-modulated transmitter modulator are the

Two original frequencies

Sum of and difference between the two original frequencies

Sum of the two original frequencies and the two original frequencies

Difference between the two original frequencies and the two original frequencies

68. (403) The configuration of the onboard weapons can be described in the

Action point table

Release table

Gravity table

Stores table

69. (410) To accurately locate an object in space by radar pulses, you need to know the

Altitude and speed

Altitude and range

Range and direction

Speed and direction

70. (412) In a frequency-shift radar system, the Doppler principle makes it possible to instantaneously sense and measure

Altitude and ground track

Target elevation and speed

Groundspeed and drift angle

Magnetic heading and altitude

71. (401) Relative bearing of an aircraft is the direction measured clockwise from

0° to the object

The object to true north

True north to the object

The aircraft heading to the object

72. (409) Which global positioning system line replaceable unit nulls out (decreases) the unwanted signal by vector addition of all signal inputs?

Antenna

Receiver

Antenna amplifier

Antenna controller

73. (415) When is the radar altimeter height indicator OFF flag not displayed?

The height indicator is turned off

Power to the radar altimeter is lost

The radar altimeter is tracking the terrain

Aircraft altitude is above 5,000 feet above ground-level

74. (404) Which is not a basic inertial navigation system component?

Accelerometer

Computer

Integrator

Indicator

75. (423) Two fundamental sections of the frequency-modulated receiver that are electrically different from those in the amplitude-modulated receiver are the

Discriminator and limiter

Limiter and audio amplifier

Local oscillator and detector

Radio-frequency amplifier and discriminator

76. (432) An advantage of the remote HAVE QUICK II configuration over the panel-mount configuration in an aircraft is it

Is more convenient for maintenance

Can be used with a remote channel indicator

Reduces cost by using existing aircraft wiring

Can be used with an ultra-high frequency direction-finding system

77. (406) What inertial navigation unit mode continuously tracks aircraft position with respect to the point of origin and destination?

Navigate

Air align

Precision align

Stored heading align

78. (414) To which item does the radar set's dual-channel beam steering controller selectively send digital phasing and polarization commands?

Phase control module

Roll electronics assembly

Roll resolver power supply

Phase control module power supply

79. (425) A transmitting radio antenna is considered to be a transducer because it

Transmits radio-frequency energy to distant locations

Converts energy to magnetic and electrical fields of force

Creates current oscillations to induce radio-frequency energy

Has electromagnetic fields that impress a voltage to be transmitted

80. (426) The radio-frequency line that has uniform capacitance between the conductors throughout the length of the line is the

Shielded pair

Air coaxial line

Parallel two-wire

Flexible coaxial line

81. (430) The frequency range of the ARC–186 very-high frequency radio receiver in the frequency modulation mode is from

30 to 87.975 megahertz

38 to 87.975 megahertz

108 to 151.975 megahertz

116 to 151.975 megahertz

82. (414) What radar set component provides stabilized pitch and roll reference data for control of antenna orientation, despite changes in aircraft attitude?

AM–853B

C–1242A

CN–221A

RT–289G

83. (411) The screen display on newer types of pulse-modulation radar indicators is called

A map

A pulse

A sweep

The spot

84. (408) The purpose of the ARN–151 receiver unit is to

Demodulate the radio-frequency signal to produce an audio signal

Demodulate the intermediate-frequency signal to produce an audio signal

Process the radio-frequency signal and calculate it into a navigation solution

Process the intermediate-frequency signal and calculate it into a navigation solution

85. (422) In an amplitude-modulated receiver, the detector circuit responds only to the

Rate of frequency deviation of the intermediate-frequency signal

Amplitude variations of the intermediate-frequency signal

Frequency variations of the intermediate-frequency signal

Pulse width of the intermediate-frequency signal

86. (405) What schedules task execution that selects the inertial navigation unit's (INU) mode,performs mode initialization, provides geographic-oriented system outputs (including data representing Earth radii and gravity vectors), monitors the INU's performance, and reports system failures?

Built-in test function

Operational flight program

Preprocessor formatting software

Avionics operational flight program

87. (420) In a single-sideband transmitter, the balance modulator's output consists of the

Carrier, and upper and lower sidebands

Upper and lower sidebands

Lower sideband only

Upper sideband only

88. (417) To achieve amplitude modulation, what device is used to ensure the output signal contains frequencies not present in the input signal?

Linear amplifier

Power amplifier

Balanced amplifier

Nonlinear amplifier

89. (418) In a frequency-modulated signal, the amount of frequency modulation is controlled by the modulating signal's

Frequency

Amplitude

Phase

Rate

90. (424) A major draw back in using a single-sideband (SSB) receiver over an amplitude-modulated (AM) receiver is the

Need for critical frequency stability

SSB receiver has a narrower bandpass

AM receiver requires only one oscillator circuit

Weak signals are easy to detect in the AM receiver

91. (430) The frequency range of the ARC–186 very-high frequency radio receiver in the amplitude modulation mode is from

30 to 87.975 megahertz

38 to 87.975 megahertz

108 to 151.975 megahertz

116 to 151.975 megahertz

92. (420) In a signal-sideband system, which mode of operation transmits both sidebands and deletes the carrier?

Independent sideband

Single-sideband transmission

Amplitude-modulated equivalent

Single-sideband suppressed carrier

93. (415) The radar altimeter TEST button provides the capability for testing the low-altitude fly-up circuits in the

Radar data terminals and terrain-following avionic control units

Radar data terminals and ground navigation avionic control units

Terrain-following avionic control units and delivery avionic control units

Ground navigation avionic control units and weapons delivery avionic control units

94. (429) Which very-high frequency radio system has the best chance of receiving a signal from a station located beyond the horizon?

Ultra-high frequency

Super-high frequency

Very-high frequency amplitude modulation

Very-high frequency frequency modulation

95. (432) The AN/ARC–210 receiver/transmitter does not provide

Half-duplex, 2 way-communications of normal and secure voice frequency-modulated signals

Half-duplex, two-way communications of normal and secure voice amplitude-modulated

Receive-only mode of operation of normal and secure voice from 108.000 to 117.9975

Transmit-only mode of operation of normal and secure voice from 108.000 to 117.9975

96. (419) The low-pass filter in the automatic frequency control circuitry of a frequency-modulated transmitter is designed to prevent

The lower sideband from being transmitted

Correction voltage changes caused by the modulating signals

Carrier frequency feedback from tuning the reactance modulator

The audio signal from the audio amplifier from tuning the reactance modulator

97. (418) In a frequency-modulated signal, the amount of separation between the sideband frequencies is equal to the

Carrier frequency

Rate of carrier swing

Modulating frequency

Amplitude of the modulating signal

98. (415) The purpose of the keyed automatic gain control gate while the radar altimeter is in track mode is to

Generate internal range voltages proportional to aircraft altitude

Encompass and lock-on to the return video pulses

Be timed to overlap return pulse leading edge

Control the processing of the ground returns

99. (424) The basic difference between the single-sideband (SSB) receiver and a conventional superheterodyne receiver is the SSB receiver uses a

Carrier reinsertion oscillator and special mixer circuit

Special detector and carrier reinsertion oscillator

Discriminator and local oscillator circuit

Limiter and second mixer circuit

100. (430) On which frequencies can the ARC–186 very-high frequency radio not transmit in the amplitude modulation mode?

30 to 87.975 megahertz

38 to 87.975 megahertz

108 to 151.975 megahertz

116 to 151.975 megahertz

2a553a 2011 Vol 3

1. (403) A cross wind causes a falling bomb to

2.

What first name or nickname would you like us to use?

2. (403) The preplanned flight route can be described in the

3. (405) What line replaceable unit consists of a gyro-stabilized platform, platform electronics,navigation computer, input/output functions, and power supply?

4. (406) During the air align mode of the inertial navigation unit, how should the aircraft be flown?

5. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is higher than the transmitted frequency?

6. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when the received frequency is lower than the transmitted frequency?

7. (401) North on a compass rose is

8. (403) If the airspeed of the aircraft is too fast, a falling bomb

9. (403) Air resistance causes a falling bomb to

10. (431) HAVE QUICK radios resist jamming by

11. (401) The polar axis is the

12. (406) What inertial navigation unit mode is about 45 minutes in duration?

13. (411) Which component in a pulse-modulation radar set provides the voltages that operate the other radar components?

14. (401) From the prime meridian west to the international dateline, meridians are assigned values of

15. (402) A vector diagram that shows the effect of the wind on the flight of an aircraft is called the

16. (401) The prime meridian is the

17. (402) The effect of wind on an aircraft is

18. (402) The sideward displacement of an aircraft by the wind is called

19. (402) The rate of movement of an aircraft relative to the Earth's surface is called

20. (402) What is used to correct true heading and allow the aircraft to make good the desired true course?

21. (416) Which radar application is used to produce a pictorial map of the terrain?

22. (405) Below what temperature does the modulator valve close to prevent over-cooling of the inertial navigation unit?

23. (405) What avionics multiplexing (MUX) data bus provides the path for the inertial navigation unit to communicate with the avionics control unit complex and, eventually, all other aircraft systems?

24. (411) Which component in a pulse-modulation radar system shapes the radio-frequency energy into a narrow beam?

25. (412) In a frequency-shift radar system, what is the relationship between a transmitter/receiver and an aircraft when no frequency shift between them can be measured?

26. (432) When two signals are received simultaneously on the same operating net, the HAVE QUICK II radio automatically goes into conferencing by

27. (401) In navigation, the primary reference is

28. (408) Which global positioning system component is passive, meaning it does not require power, adjustments, or controls to function?

29. (410) In a pulse-modulation radar system, the transmitter does not interfere with the receiver because the transmitter

30. (403) A head wind causes a falling bomb to

31. (404) Which is used to maintain accelerometer orientation in the inertial navigation system?

32. (411) What is produced in the pulse-modulation radar system by heterodyning?

33. (415) Which radar altimeter mode is initiated when an insufficient amount of return video is present during the keyed automatic gain control gate?

34. (429) A very-high frequency frequency-modulated radio is mainly used on aircraft that

35. Which system utilizes the equator as one fixed reference point and the Greenwich meridian as the other fixed reference point?

36. (401) From the prime meridian east to the international dateline, meridians are assigned values of

37. (404) The changing of position with respect to some other body is called

38. (407) How many radio-frequency signals are transmitted from each global positioning system satellite?

39. (408) Which global positioning system unit provides a display for the ARN–151?

40. (410) In which radar system is the transmitter turned on for short periods of time and off for long periods of time?

41. What is formed on the surface of the Earth by any plane that passes through the center of the Earth and divides it into two equal parts?

42. (402) On navigation charts, the lines that connect points of equal magnetic variation are called

43. (407) In the global positioning system, almanac data is transmitted to each satellite to update the navigation data message once every

44. (425) A receiving radio antenna receives radio-frequency signals by

45. (405) Which component is the central controller for the inertial navigation unit?

46. (405) The indicators on the front of the inertial navigation unit are used to

47. (421) The ability of a radio receiver to reproduce weak signals is called

48. (422) In a typical amplitude-modulated superheterodyne receiver, the process used to tune two or more circuits with a single control is called

49. (428) If the external blower for an ARC–190 high-frequency radio system is overheating, it causes a receiver-transmitter fault and

50. (405) What line replaceable unit is the prime sensor for measuring motion and velocity, and establishes and maintains a measurable frame of reference on the B–1B?

51. (407) Errors in the orbit and clock data of the global positioning system satellites are detected in the

52. (410) Which radar system can only detect objects approaching or moving away from the receiver?

53. (428) In the ARC–190 high-frequency (HF) radio system, the HF coupler matches the impedance of the antenna to the receiver-transmitter in order to

54. (405) Which is vital to the performance of the inertial navigation system?

55. (413) The voltage standing-wave ratio is determined by comparing the radar's

56. (427) What is the transmitted frequency when a high-frequency radio control is set to 27.5 megahertz (MHz), the signal is modulated by a 1000-hertz tone, and lower sideband mode is selected?

57. (431) Ultra-high frequency radios are primarily used for

58. (408) The navigational system of the global positioning system has a time accuracy to

59. (409) When the operator initializes the global positioning system (GPS), what is provided to the GPS to begin satellite tracking?

60. (411) In a pulse-modulation radar system, the pulse repetition frequency is the number of pulses

61. (413) The dimensions of a waveguide determine the waveguide's

62. (408) The global positioning system has a three-dimensional position navigation accuracy of

63. (414) Which radar set line replaceable unit performs highly accurate electronic beam steering?

64. (416) Which radar application is used primarily as an aid to navigation?

65. (410) Which part of a radar set amplifies and converts a wave into a video signal?

66. (414) The part of the radar set's low observable antenna that is addressed to steer the radiofrequency beam is the

67. (417) The frequencies created by the heterodyning process in an amplitude-modulated transmitter modulator are the

68. (403) The configuration of the onboard weapons can be described in the

69. (410) To accurately locate an object in space by radar pulses, you need to know the

70. (412) In a frequency-shift radar system, the Doppler principle makes it possible to instantaneously sense and measure

71. (401) Relative bearing of an aircraft is the direction measured clockwise from

72. (409) Which global positioning system line replaceable unit nulls out (decreases) the unwanted signal by vector addition of all signal inputs?

73. (415) When is the radar altimeter height indicator OFF flag not displayed?

74. (404) Which is not a basic inertial navigation system component?

75. (423) Two fundamental sections of the frequency-modulated receiver that are electrically different from those in the amplitude-modulated receiver are the

76. (432) An advantage of the remote HAVE QUICK II configuration over the panel-mount configuration in an aircraft is it

77. (406) What inertial navigation unit mode continuously tracks aircraft position with respect to the point of origin and destination?