AIRLIFT OPERATIONS U.S. soldiers attach cargo to a CH-47 Chinook helicopter on Roberts International Airport in Harbel, Liberia, Dec. 12, 2014. The mission was to airlift incinerators to a new Ebola treatment unit built in support of Operation United Assistance. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 035912-Z-OYW32-091.jpg Photo Gallery