EMS Line Up Federal Emergency Management Agency assets arrive Oct. 12, 2017, at Travis Air Force Base, Calif. At the request of the U.S. Department of Homeland Security, Travis was designated as an installation support base during response to the Atlas Fire, which has spread across Northern California since Oct. 8, 2017. A total of 120 ambulances, 25 support vehicles and 25 tractor trailers are staged at Travis. SHARE: Download: Full Size (1.47 MB) Credit: Louis Briscese, Air Force VIRIN: 171012-F-LI975-0097.JPG Photo Gallery