Different Grenades Army Sgt. Ryan Moldovan identifies numerous types of hand grenades and their uses during the Army Reserve Drill Sergeant of the Year competition at Fort Jackson, S.C., Sept. 7, 2016. Moldovan is assigned to the 98th Training Division. Army photo by Sgt. 1st Class Brian Hamilton SHARE: Download: Full Size (2.39 MB) Tags: Soldiers, Army, training Credit: Sgt. 1st Class Brian Hamilton VIRIN: 160907-A-OY832-007A.JPG Photo Gallery