U.S. Air Force Senior Airman Samuel Fallot, a cryogenics journeyman with the 379th Expeditionary Logistics Readiness Squadron, Fuels Management Flight, removes a cryogenic sampler at Al Udeid Air Base, Qatar, Aug 9, 2017. Fallot watched the cryogenic sampler receive a sample of liquid oxygen that will be transported 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)