U.S. Marine Cpl. Brenden Breeden, a line safety NCO from Detachment 18, Marine Medium Tiltrotor Squadron 262, 31st Marine Expeditionary Unit, tests fuel during joint training at Kadena Air Base, Japan March 11, 2021. The fuel is quality tested before filling the fuel bladder, and passes through a filter that pulls out water and sediment while being pumped. To make the exercise as accurate to a real-world scenario as possible, protocol is followed and the fuel is tested for impurities again after filling the bladder. (U.S. Air Force photo by Airman 1st Class Anna Nolte)