Summary

United States. Department of Defense United States Army Field Manual 7-93 Long-Range Surveillance Unit Operations… (1995)

BRIDGE RECONNAISSANCE Bridge reconnaissance is not a separate category of reconnaissance, but may be a necessary part of area, zone, or route reconnaissance. Procedures are taken to provide dimensional data to analyze the bridge structure for repairs, demolition, or military load classification. It is not likely that a team will be able to obtain precise measurements.
Source: Wikisource

United States. Department of Defense United States Army Field Manual 7-93 Long-Range Surveillance Unit Operations… (1995)

Short-range observation and surveillance may be from observation posts, but usually the reconnaissance teams must move near the objective before they can find a position from which to observe. In some cases, the reconnaissance teams may gather information by listening even though they cannot see the enemy.
Source: Wikisource

United States. Department of Defense United States Army Field Manual 7-93 Long-Range Surveillance Unit Operations… (1995)

Emergency Procedures. During the flight, from extraction until the team is safely and quickly detached from the SPIES rope, there should be a conscientious effort on the part of each team member to be aware of any problem which may arise from above or below. The soldier above checks the soldier below. At the first sign of danger or if there is an emergency, the team leader or a team member places his freehand on his head. The SPIES master, on observing anyone on the SPIES rope with his hand on his head, instructs the pilot to make an emergency landing in the nearest and safest area.
Source: Wikisource

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