The 633d Security Forces Squadron implements Sentry Towers at Joint Base Langley-Eustis, Virginia, Jan. 2022. After various personnel organized and created a plan of action, the 633d SFS partnered with Auduril, a defense technology company that solves complex national security problems, to construct Sentry Towers, providing intelligence needed to identify unauthorized personnel on the base’s coastline. (U.S. Air Force courtesy photo)