Senior Master Sgt. Bradley Rose, 185th Security Forces Squadron, left, Staff Sgt. Jonathan Finer, 124th SFS, and Master Sgt. Gregory Wardle, 153rd SFS, tackle a land navigation element Jan. 23, 2020, at Fort Chaffee, Arkansas. The team of Airmen from across the Air National Guard gathered to train for the Air Force Defender Challenge, a security forces skills competition held in May at Joint Base San Antonio-Camp Bullis, Texas.