Staff Sgt. Chad Exner, 510th Weapons Section weapons load crew chief, and Senior Airman Angelo Cepeda, 510th Weapons Section weapons load crew member, unload munitions from an F-16 Fighting Falcon during an initial certification Oct. 19 at Aviano Air Base, Italy. Weapons load crew members need to be recertified every time they transition to a new base. (U.S. Air Force illustration by Senior Airman Katherine Tereyama) 31st MOS inspects weapons load crew by Senior Airman Katherine Tereyama 31st Fighter Wing Public Affairs 10/24/2012 - AVIANO AIR BASE, Italy -- Mission Spotlights are a weekly photo slideshow highlighting the mission of a squadron. This week's Mission Spotlight focuses on the 31st Maintenance Operations Squadron. The 31st MOS is comprised of Airmen selected for their expertise in weapons loading. Airmen from the 31st MOS spend their two years in the squadron inspecting and certifying 510th and 555th Weapons Sections load crews monthly and initial certifications for new members. To view the photo slideshow, click here.