W elcome to Marine Corps Air Station Yuma. You will soon become an integral part of the Marine Corps' premiere aviation training base, serving along with approximately 4,000 fellow active duty Marines and sailors. With access to 2.8 million acres of bombing and aviation training ranges and superb flying weather, MCAS Yuma supports 80 percent of the Corps' air-to-ground aviation training. The air station annually hosts approximately 70 aviation units, bringing an average of 600 aircraft and 14,000 personnel for ...