Senior Airman Michael Aguilar, 27th Special Operations Mission Support Group Detachment 1, Mission Sustainment Team 1 personnelist, keeps watch during exercise Vigilant Palisade at Melrose Air Force Range, N.M., Sept. 23, 2021. The exercise tested the MST 1 Airmen’s capability to operate and defend a forward support site using force protection and small unit tactics. The MST concept pairs Airmen from 22 career fields to create small teams able to operate independent of main bases, by training them to use skill sets outside of their normal duties. (U.S. Air Force photo by Senior Airman Marcel Williams)