Major General Juan G. Ayala, assumed leadership for the Marine Corps Installations Command (MCICOM) from retiring Major General James A. Kessler in a change of command ceremony at Henderson Hall, Arlington, VA, July 2, 2013. - Major General Juan G. Ayala, assumed leadership for the Marine Corps Installations Command (MCICOM) from retiring Major General James A. Kessler in a change of command ceremony at Henderson Hall, Arlington, VA, July 2, 2013.