Lesson 4/Learning Event 1
The M43 Detector Unit of the Automatic Chemical Agent Alarm
will signal when exposed to heavy concentrations of rocket
propellant smoke, screening smoke, signaling smoke, engine
exhaust, or in the event of nuclear explosion.
The M256 kit is used to detect the presence of chemical agents.
NBC reconnaissance units and unit survey parties conduct chemical survey operations to identify
the type and extent of the hazard. The illustration in figure 32 is an example of a chemical route
survey mission. Following figure 32 is a detailed explanation of how this chemical route survey
mission should be conducted.