Video: 419th validates ACE concepts at Sentry Savannah Published May 6, 2022 By Staff Sgt. Anthony Pham 419th Fighter Wing Public Affairs SAVANNAH, Ga. -- Reservists from the 419th Fighter Wing at Hill Air Force Base, Utah, participate in Sentry Savannah, the Air National Guard’s largest fourth- and fifth-generation fighter aircraft exercise that began May 2. Watch the video The exercise is held annually at the Air Dominance Center, which is one of only four Combat Readiness Training Centers in the United States. This is the first year the 419th FW has participated in the event, which it will use to validate its deployment model known as Agile Combat Employment.