Kirtland Air Force Base Security Forces and officers from the Albuquerque Police Department came together to honor those lives lost in the line of duty at Hardin Field, New Mexico. Kirtland AFB is the largest installation in Air Force Global Strike Command and sixth largest in the Air Force. The base occupies 51,558 acres and employs over 23,000 people, including more than 4,200 active duty and 1,000 Guard, plus 3,200 part-time Reserve personnel.