U.S. Air Force Staff Sgt. Kennie Delmo, left, a cryogenics supervisor and Senior Airman Samuel Fallot, a cryogenics journeyman with the 379th Expeditionary Logistics Readiness Squadron, Fuels Management Flight, wait for the pounds per square inch levels to increase on the cryogenic sampler at Al Udeid Air Base, Qatar, Aug. 9, 2017. Delmo and Fallot