Senior Airman Senovia Gallegos a Traditional Reservist with the 477th Security Forces Squadron, trains on the Engagement Skills Trainer 2000 here. The EST 2000 offers a realistic alternative for training in marksmanship, collective and shoot/do not shoot scenarios on both the M-9 and the M-4. The 477th SFS stood up under the 477th FG here March 1. (U.S. Air Force Reserve Photo/Tech. Sgt. Dana Rosso)