U.S. Air Force Col. Shamekia N. Toliver (left), 502nd Installation Support Group commander, hands the unit guidon to Lt. Col. Gilberto S. Perez (right), as he assumes command of the 502nd Communications Squadron during the change of command ceremony at Joint Base San Antonio-Lackland, June 29, 2023. The 502nd CS is the largest stateside communications squadron in the Air Force supporting the largest Defense Department joint base.