Marines with Marine Corps Air Station Yuma remove an old structure as part of a cleanup effort Oct. 22, 2019 on the Barry M. Goldwater Range West. The BMGR consists of about 1.7 million acres of land and MCAS Yuma manages over 650,000 of those acres. - Marines with Marine Corps Air Station Yuma remove an old structure as part of a cleanup effort Oct. 22, 2019 on the Barry M. Goldwater Range West. The BMGR consists of about 1.7 million acres of land and MCAS Yuma manages over 650,000 of those acres.