U.S. Air Force Senior Airman Samuel Fallot,a cryogenics journeyman with the 379th Expeditionary Logistics Readiness Squadron, Fuels Management Flight, gives a thumbs up at Al Udeid Air Base, Qatar, Aug. 9, 2017. Fallot is watching pounds per square inch levels on the cryogenic sampler where it received a sample of liquid oxygen so it may be transported safely to the lab for quality- testing before it is sent to other locations throughout the U.S. Air Forces Central Command area of responsibility. (U.S. Air Force photo by Tech. Sgt. Amy M. Lovgren)