Air Force 2nd Lt. Bobby Threatt, the operations officer for the 474th Expeditionary Civil Engineering Squadron, hammers a nail into a support beam for a vehicle checkpoint structure, July 6. The 474th ECES supports Joint Task Force Guantanamo by maintaining the Expeditionary Legal Complex and Camp Justice facilities and infrastructure. JTF Guantanamo conducts safe, humane, legal and transparent care and custody of detainees, including those convicted by military commission and those ordered released by a court. The JTF conducts intelligence collection, analysis and dissemination for the protection of detainees and personnel working in JTF Guantanamo facilities and in support of the War on Terror. JTF Guantanamo provides support to the Office of Military Commissions, to law enforcement and to war crimes investigations. The JTF conducts planning for and, on order, responds to Caribbean mass migration operations.