Polish military members observe U.S. Air Force Airmen conducting Negatively Pressurized Conex Lite training on the flightline at Ramstein Air Base, Germany, July 28, 2021. The Polish military visited as a joint U.S. NATO NPCL demonstration to train with U.S. Forces and share knowledge on the equipment. (U.S. Air Force photo by Airman 1st Class Madelyn Keech)