Chief Master Sgt. Nathaniel Perry, 11th Wing and Joint Base Andrews, Md. command chief, gives a speech during the 70th Air Force Birthday Celebration at the Armed Forces Retirement Home in Washington, D.C., Sept. 7, 2017. Perry spoke about the accomplishments of the force and how past veterans have help mold the branch. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)