Welcome to MCAS Yuma. Our primary mission is to support aerial weapons training for the Atlantic and Pacific Fleet Marine Forces and Navy, and to serve as a base of operations for Marine Aviation Weapons and Tactics Squadron-1 and Third MAW units, including Marine Aircraft Group-13. You will soon become an integral part of the Marine Corps’ premier aviation training base, serving along with approximately 4,500 fellow active-duty Marines and Sailors. With access to more than one 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 hosts approximately 70 aviation units, bringing an average of 600 aircraft and 14,000 personnel for ongoing training that takes place throughout the year.