PORT HUENEME, Calif. (Feb. 2, 2017) - Equipment Operator Constructionman Doran Macal, assigned to Naval Mobile Construction Battalion (NMCB) 4, conducts a simulated test to detect chemical agents using an M-256 detector kit during Command Post Exercise (CPX) 3, Feb. 2. The intent of CPX is to establish command, control, communication, computer and intelligence infrastructure to prepare for the battalion’s upcoming field training exercise (FTX).

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