| 1. |
There are two broad categories of surveillance -- direct and indirect. Define these two methods. |
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| 2. |
Give two advantages of direct surveillance. |
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| 3. |
Give two advantages of indirect surveillance methods. |
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| 4. |
There are two major types of aerial photography in common use for surveillance purposes -- vertical and oblique. Which type is most commonly used and why is this so? |
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| 5. |
What expedient can be used to obtain oblique photography from helicopters or other small aircraft? |
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| 6. |
Low altitude oblique aerial photography provides valuable information on ground activities. What terrain features may limit its effectiveness? |
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| 7. |
There are several devices for indirect surveillance. Which type of device uses radio signals or ultrahigh frequency to transmit reflected signals from which characteristics of the object under observation may be determined? |
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| 8. |
What means besides foliage cover should be used to prevent detection by air to ground radar? |
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| 9. |
Infrared devices are also used in surveillance. Which type of infrared device detects and is sensitive to the aerial wavelengths (heat emission)? |
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| 10. |
What measure of insulation can be used to attenuate the heat radiation of an object and thereby help prevent detection by passive (far) infrared detectors? |
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| 11. |
Against which type of infrared device are screening nets effective? |
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| 12. |
Starlight scopes are special devices which greatly amplify reduced light to permit visual detection under night conditions. What countermeasures can be used against detection by those devices? |
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| 13. |
Effective countersurveillance depends upon three principles or concepts which govern all implementary plans and activities? What are those principles? |
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| 14. |
Concealment of activities and objects is an objective of the countersurveillance plans of a unit. What are the three techniques used in concealment of objects or activities? |
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| 15. |
The site chosen must provide concealment without disturbing or altering the characteristic pattern of the terrain. What are the four types of terrain? |
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| 16. |
In choosing a site for an activity or unit, there is one requirement (other than size and meeting mission requirements) that all locations must have. What is this requirement? |
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| 17. |
Tracks of vehicles are usually easily detected. How is their destination obscured? |
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| 18. |
A one-way track plan of the site should be laid out. How is this done? |
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| 19. |
In a desert, or any open barren terrain, the lower an object is to the ground, the smaller is its shadow and the easier it is to conceal from aerial observation. Knowing this, what would be your first step in concealing a vehicle under these conditions? |
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| 20. |
The maintenance of camouflage while a unit is in position is vital to its security. What actions can be taken periodically to determine if the camouflage is continuing to be effective? |
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