An A-10C Thunderbolt II aircraft conducts an aerial survey of the terrain Aug. 14, 2017, for a training exercise at Tapa Range, Estonia. The flying training deployment is funded by the European Reassurance Initiative in support of Operation Atlantic Resolve. The U.S. Air Force’s forward presence in Europe allows the U.S. to work with allies and partners to develop and improve ready air forces capable of maintaining regional security. (U.S. Air National Guard photo by Airman 1st Class Sarah M. McClanahan)