A US Army (USA) 501st Aviation Battalion CH-47 Chinook cargo helicopter carries a sling loaded USA Charlie Company (C Co), 40th Engineer (ENG) Battalion (BN), Small Emplacement Excavator (SEE) to where it will be used to build a hilltop security outpost. These USA units are stationed at Camp Bondsteel, Kosovo, Serbia (SER) and are part of Task Force (TF) Falcon, which is the official designation for the US European Command (USEUCOM) forces assigned to the NATO (North Atlantic Treaty Organization) led peacekeeping Kosovo Force (KFOR) during Operation JOINT GUARDIAN