Republic of South Africa (ZAF) representatives (left to right) Major (MAJ) Tahbo Ntoni, First Lieutenant (1LT) Jaco Jacobs and STAFF Sergeant (SSGT) Buks Beukes watch Marconi Operator Mr. Cortez, make last minute adjustments before evaluation tests begin at exercise Combine Endeavor, Camp Sarafovo, Bulgaria (BGR). Exercise Combined Endeavor 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