Sen. John McCain, Arizona Republican, is flanked by From the left, Commandant of the Marine Corps Gen. James F. Amos (left) and Lt. Col. Jeffrey Scott to inaugurate Marine Fighter Attack Squadron 121 on Tuesday in Yuma, Ariz. (Lockheed Martin Aeronautics Co.)

Sen. John McCain, Arizona Republican, is flanked by From the left, Commandant of the Marine Corps Gen. James F. Amos (left) and Lt. Col. Jeffrey Scott to inaugurate Marine Fighter Attack Squadron 121 on Tuesday in Yuma, Ariz. (Lockheed Martin Aeronautics Co.)