David Zulli, son of U.S. Air Force Lt. Col. Daniel Zulli, 355th Fighter Wing base chaplain, completes schoolwork during a class at Davis-Monthan Air Force Base, Ariz., April 4, 2014. David is involved in many community organizations and has gained 130 volunteer hours since August 2013. (U.S. Air Force photo by Airman 1st Class Betty R. Chevalier/released)