Staff Sgt. Tiffany Scott, 60th Operations Support Squadron combat weather forecaster, simulates using a Man Portable Air Defense System on the flightline Sept. 24. The simulation allowed Travis members a chance to learn first-hand about some of the most dangerous and prevalent threats to mobility aircraft around the world and gain a better understanding of these threats in accomplishing their mission. (U.S. Air Force photo/Tech. Sgt. Donald Osborn)