Republic of South Africa Staff Sergeant (SSGT) Buks Beukes (left) and 1st Lieutenant (1LT) Jaco Jacobs (second from right), review a data collection sheets with evaluator US Air Force (USAF) Staff Sergeant (SSGT) Dorothy Galvan (second from left) and Italian Army Warrant Officer (WO) Gianluca De Giovanni, after finishing an analog to digital phone test with the South Eastern European Brigade (SEEBRIG) team at Camp Sarafovo, Bulgaria (BGR). Combined Endeavor 2004, is a US European Command-sponsored exercise, designed to identify and document command, control, communications, and computer (C4) interoperability between North Atlantic Treaty Organization (NATO) and Partnership for Peace nations