Col. Catherine Barrington, 90th Missile Wing commander, talks to members of the 90th Munitions Squadron's Global Strike Challenge team after they completed event practice Aug. 18, 2021 on F.E. Warren Air Force Base, Wyoming. Six MUNS Airmen will compete August 30-31 against the two other missile wings for the title of best Munitions Squadron. (U. S. Air Force photo by Glenn S. Robertson)