U.S. Army paratroopers, assigned to 1st Squadron, 91st

U.S. Army paratroopers, assigned to 1st Squadron, 91st Cavalry Regiment, 173rd Airborne Brigade, provide security during an air assault operation with Czech army paratroopers, assigned to the 43rd Airborne Battalion, 4th Rapid Reaction Brigadeas part of Exercise Sky Soldier II at the Bechyne Training Area, Czech Republic, Sept. 24, 2015. Sky Soldier is a series of bilateral exercises between the 173rd Airborne and 4th Rapid Reaction Brigades designed to increase interoperability and strengthen partnerships between NATO airborne forces. (U.S. Army photo by Visual Information Specialist Markus Rauchenberger/released)