Using the term gas mask in basic training will give you plenty of opportunities to ... The M 7 has a lot of advantages over the masks that came before it like the M9 M24 and M25. ... Can you recognize US military personnel in civilian clothes
30 Jan 20 2 ... The afternoon culminated with a miserable visit to the gas chamber where ... of their protective gas masks prior to exiting the chamber like a bleary eyed ... agent exposure and checking for contamination with M8/M9 paper.