Airmen at Work: Ground equipment vital to Herc mission Published May 30, 2016 By Tech. Sgt. Rick Lisum 910th Airlift Wing Public Affairs YOUNGSTOWN AIR RESERVE STATION, Ohio -- Staff Sgt. Bryon Sinclair, an aerospace ground equipment journeyman with the 910th Maintenance Squadron, looks for an oil leak on a B809 generator, here May 15, 2016. The B809 generator is used for ground power on C-130 Hercules aircraft. (U. S. Air Force photo/Tech. Sgt. Rick Lisum)