Pfc. Nicholas Gatoura, of Anvil Troop, 1st Squadron,

Pfc. Nicholas Gatoura, of Anvil Troop, 1st Squadron, 91st Cavalry Regiment, 173rd Airborne Brigade, launches an RQ-11 Raven unmanned aerial vehicle while his platoon leader, 1st Lt. Joseph Davey, and British officer Capt. Richard Merchant, of 2nd Battalion, The Yorkshire Regiment, watch during Operation Siil outside of Johvi, Estonia, May 9. Operation Siil, also known as Hedgehog, is the largest training exercise ever held in Estonia and features more than 12,000 Soldiers from six nations. Operation Siil, part of Operation Atlantic Resolve, is a way for the United States and NATO forces to unite, train, build relationships, trust and enhance interoperability. (U.S. Army Photo by Sgt. 1st Class Joshua S. Brandenburg, 13th Public Affairs Detachment)