The Air Force Vice Chief of Staff Gen. Larry O. Spencer testifies on the Air Force Readiness Posture April 10, 2014, before the House Armed Services Committee in Washington, D.C. Spencer shared the witness table with Gen. John F. Campbell, the vice chief of staff of the U.S. Army; Adm. Mark E. Ferguson III, the vice chief of naval operations; and Gen. John M. Paxton Jr., the assistant commandant of the Marine Corps.