Paratroopers from various countries perform rehearsals in a mock aircraft during International Jump Week (IJW), Ramstein Air Base, Germany, July 6, 2015. The 435th Contingency Response Group hosts IJW annually, to build global partnerships, foster camaraderie between U.S. and international paratroopers, and to exchange current tactics, techniques and procedures pertaining to Airborne Operations (Static Line and Military Free Fall). (U.S. Army Photo By Staff Sgt. Justin P. Morelli / Released)