JOINT BASE ANDREWS, Md. -- Members of the 459th Security Forces Squadron, also known as defenders, conduct "Critical Skills Training” (CST) series, Jan. 11, 2025, at Joint Base Andrews, Md. This iteration provided repetitions in vehicle interdiction/high risk traffic stops, patrolling with degraded tactical communications, and an overview of Grey Zone Warfare. CST prepares Defenders to operate at contingency locations in a near-peer fight scenario.