SIGNAL LIGHTS Air Force Staff Sgt. Chris Olmsted directs a C-17 Globemaster III in Monrovia, Liberia, as part of Operation United Assistance, Oct. 23, 2014. Operation United Assistance is a U.S. military effort to provide command and control, logistics, training and engineering support to the U.S. government’s efforts to contain the Ebola virus outbreak in West Africa. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 117722-R-QXR33-797.jpg Photo Gallery