31st OSS trains with Bulgarian air force
U.S. Air Force Staff Sgt. Flaviu Telecan, 31st Maintenance Group precision measurement equipment laboratory noncommissioned officer in charge, teaches a member of the Bulgarian Air Force the ins and outs of pressure controller equipment at Aviano Air Base, Italy, March 20, 2025. The PMEL shop is an environmentally controlled laboratory, where positive air pressure and a temperature of around 73 degrees Fahrenheit must be maintained to protect the integrity of the equipment. (U.S. Air Force photo by Staff Sgt. Essence Myricks)