Soldiers from the 210th Military Police Company work with the Mecklenburg Sheriff's office to secure the main entrance from angry protesters during the Vigilant Guard exercise at the Franklin Water Treatment Facility in Charlotte, N.C., on March 7, 2015. Vigilant Guard is an exercise program sponsored by U.S. Northern Command in conjunction with the National Guard Bureau. The program provides an opportunity for state National Guard Headquarters, state joint task forces, N.C. Emergency Management, and county civilian partners to improve communication and operational relationships in a domestic operations environment. (U.S. Army photo by Sgt Leticia Samuels/382nd Public Affairs Detachment)