Sample it

Staff Sgt. Michael McPherson and Tech. Sgt. Leren Curry, members of the 403rd Logistics Readiness Squadron, take a sample of liquid oxygen from a LOX cart, in order to check for impurities, during a training module Apr. 14. The 403rd LRS and 41st Aerial Port Squadron shared job knowledge with Naval Expeditionary Logistics Regiment 4 battalions as part of a joint training exercise Apr. 12-17 at Keesler Air Force Base, Miss. (U.S. Air Force photo by Maj. Heather Newcomb)