July 2, 2019 Gunfighters use 1950s tech on F-35 for a huge win Airmen from the 366th Logistics Readiness Squadron, also known as Gunfighters, are the first in the Air Force to perform hot-pit refueling on F-35 Lightning II’s with a Type 1 hydrant system from the 1950s and hose cart from the 1970s.