Battle crosses are mounted on stage at the Mckenzie Arena at the University of Tennessee at Chattanooga, Aug. 15, 2015. The battle crosses are symbolic replacements for crosses for service members who have fallen in the line of duty. Four Marines and one sailor died during a shooting in Chattanooga, Tennessee, July 16, 2015. - Battle crosses are mounted on stage at the McKenzie Arena at the University of Tennessee at Chattanooga, Aug. 15, 2015. The battle crosses are symbolic replacements for crosses for service members who have fallen in the line of duty. Four Marines and one sailor died during a shooting in Chattanooga, Tennessee, July 16, 2015.

Gen. Joseph F. Dunford, 36th Commandant of the Marine Corps, speaks during a dedication ceremony at the John W. Warner Center for Advanced Military Studies at Marine Corps Base Quantico, Virginia, Aug. 7, 2015. The ceremony honored both Brig. Gen. Edwin H. Simmons and John W. Warner, both of whom played an integral role in improving military education during their careers. - Gen. Joseph F. Dunford, 36th Commandant of the Marine Corps, speaks during a dedication ceremony at the John W. Warner Center for Advanced Military Studies at Marine Corps Base Quantico, Virginia, Aug. 7, 2015. The ceremony honored both Brig. Gen. Edwin H. Simmons and John W. Warner, both of whom played an integral role in improving military education during their careers.

Gen. Joseph Dunford, the Commandant of the Marine Corps, speaks with Marines on Camp Hansen, Okinawa, March 26. Dunford traveled to the Marine bases on Okinawa from March 24 to the 26 to talk with Marines about his expectations for the Marines and the Corps. “My priorities are to make sure we have the warfighting capabilities we need, to address the maturity of our leaders and to make sure they have the training, education and the experience that they need to be successful on the battlefield,” said Dunford. (U.S. Marine Corps Photo by Cpl. Thor J. Larson/Released) - Gen. Joseph Dunford, the Commandant of the Marine Corps, speaks with Marines on Camp Hansen, Okinawa, March 26. Dunford traveled to the Marine bases on Okinawa from March 24 to the 26 to talk with Marines about his expectations for the Marines and the Corps. “My priorities are to make sure we have the warfighting capabilities we need, to address the maturity of our leaders and to make sure they have the training, education and the experience that they need to be successful on the battlefield,” said Dunford. (U.S. Marine Corps Photo by Cpl. Thor J. Larson/Released)