LANGLEY AIR FORCE BASE, Va -- U.S. Army Col. Reggie Austin, 633d Air Base Wing vice commander, receives a flu shot from Master Sgt. Bonnie McKusick, 633d ABW command chief assistant, Oct. 14. This season’s vaccines protect not only against H1N1 but also against two other influenza viruses: H3N2 virus and an Influenza B virus. (U.S. Air Force photo/Staff Sgt. Ashley Hawkins)