U.S. Air Force Col. David Chisenhall, 633rd Mission Support Group commander, speaks during a ribbon cutting ceremony at the newly-constructed LaSalle Avenue Gate at Langley Air Force Base, Va., July 19, 2013. The LaSalle Gate is fully operational and open 24 hours a day, while the Visitors’ Center is open Monday through Friday from 5 a.m. to 7 p.m., and Saturday and Sunday from 7:30 a.m. to 5 p.m. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/ Released)