News Pro mask cleaning March 8, 2013 Photos by Staff Sgt. Alexander BurnettSpc. Mariafernanda Romero, the chemical, biological, radiological and nuclear NCO in charge of Headquarters and Headquarters company, 21st Special Troops Battalion, 21st Theater Sustainment Command, dips an M40/A1 protective mask in water during a cleaning procedure Feb. 26 on Daener Kaserne. Soldiers from the 21st TSC have their protective masks serviced and inspected twice a year to ensure they remain in working condition. The regularly scheduled maintenance includes mask cleaning, drying, reassembly and testing. Romero disassembles an M40/A1 protective mask with Staff Sgt. Jose Espinoza, a platoon sergeant and armorer also with HHC, Feb. 26 on Daenner Kaserne. Tags: photos « Previous × Next » Share Tweet