Lesson 4/Learning Event 1
The situation which exists in figure 32 is as follows:
The Main Supply Routes (MSR) are contaminated by a chemical agent, delivered by enemy rocket
launchers. There are two NBC defense platoons under the operational control of the center and right
brigades. These platoons have been ordered to conduct a chemical route survey along the three
MSR's.
Platoon leaders brief their survey squad leaders. Squad leaders follow the troop-leading procedures
studied in Lesson 1, Learning Event 4. The mission starts with three 3-man teams deployed on each
MSR. One team covers the MSR while the other two cover the flanks to search adjacent terrain.
The teams continuously sample the air with the Automatic Chemical Agent Alarm System.
One by one the teams dismount as their alarms activate. They then conduct sampling operations to
determine the type of contamination. One NBC scout stays in the vehicle and mans the pedestal-
mounted machine gun while the other team members look for the contaminant.
The reconnaissance NCO selects the area to be searched. The other NBC scout operates the
chemical agent detector kit. The reconnaissance NCO directs his attention to shell craters, low-lying
patches of woods, defiles, ravines, and areas covered with high grass or underbrush. The scouts also
check water sources for chemical contamination. They then mark the area, service the Automatic
Chemical Agent Alarm, mount their vehicle, and move to another location to determine the extent of
contamination. While moving, the reconnaissance NCO sends the following information in an NBC
1 (Chemical) Report:
Type of agent
Location
Extent of contamination
Date/time of contamination if known
The team then continues to sample vegetation and terrain for liquid contamination. When doing
this, they use chemical agent detector paper.
Actions Following Completion of Mission
When the NBC reconnaissance teams or unit NBC teams encounter a chemical agent during the
mission, they must decontaminate before being released from the mission. Once the teams have
assembled at a prearranged location, they move as a unit to a combined personnel and equipment
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