SMOKE GRENADE Air Force Staff Sgt. Brandon Washington, right, observes Air Force Tech. Sgt. Rudolph Stuart throw a smoke grenade during combat readiness training with the 628th Explosive Ordnance Squadron at Joint Base Charleston, S.C., Nov. 30, 2012. Airmen attended an hour-long class to review safety procedures when handling grenades. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 963492-Q-NER31-911.jpg Photo Gallery