Swift tests a IF-25K aerostat.

KEY WEST, Florida (April 23, 2013) A tethered TIF-25K aerostat is positioned on the Military Sealift Command high-speed vessel Swift (HSV 2) to be tested and evaluated at sea for use in future Operation Martillo counter transnational organized crime operations while assigned to U.S. 4th Fleet.(U.S. Navy photo by Lt. Cmdr. Corey Barker/Released)