Four US Army pilots, 21st Aviation, 2nd Battalion, 1ST Regiment, check their gear and talk together in a helicopter revetment area after arriving at Comanche Base, located near Tuzla, Bosnia-Herzegovina. These pilots are in Bosnia-Herzegovina participating in Operation Joint Endeavor, which is a peacekeeping effort by a multinational Implementation Force (IFOR), comprised of NATO and non-NATO military forces, deployed to Bosnia in support of the Dayton Peace Accords