200811-F-GY993-010
Col. Aaron Guill, right, Air Force Security Forces Center gaining commander, salutes Maj. Gen. Tom Wilcox, Air Force Installation and Mission Support Center commander, during the AFSFC change of command ceremony held at Joint Base San Antonio-Lackland, Texas, Aug. 11, 2020. Guill gained command from Col. Brian S. Greenroad. (U.S. Air Force photo by Sarayuth Pinthong)