From left to right, Senior Airman Igor Karlov, Tech. Sgt. Robert Custer and Staff Sgt. Heikell Perez, all 111th Logistics Readiness Squadron supply technicians in the 111th Attack Wing, receive customized training from John Patchan, the Joint Program Executive Office-Chemical, Biological Defense Enterprise Fielding and Surveillance team leader for Team Tyndall, at Horsham Air Guard Station, Pa., March 10, 2016. The team was brought in to assist in completing M-50 Joint Service General Purpose Mask fit test assurance for the 111th Attack Wing to remain compliant. Sponsored by the National Guard Bureau, they saved the unit approximately $6,200.00 and tested an estimated 750 masks within a two-week timeframe. (U.S. Air National Guard photo by Tech. Sgt. Andria Allmond)