Tech. Sgt. Ryan Tennyson (left), an EOD instructor with the 366th Training Squadron Field Training Detachment 3 at Naval School Explosive Ordnance Disposal at Eglin Air Force Base, Fla., discusses improvised explosive devices with students Nov. 11, 2011. Tennyson, who has been at NAVSCOLEOD for almost four years, was the 2011 AETC NCO Instructor of the Year. (U.S. Air Force courtesy photo)