An Oregon Army National Guard Blackhawk helicopter from Charlie Co., 7-158 Aviation prepares to land near Hayward Field, on the University of Oregon campus in Eugene, Ore., May 2, as part of the Vigilant Guard Exercise. Multiple aircraft, including a CH-47 Chinook helicopter were utilized to evacuate 142 simulated casualties during the exercise at the site. The exercise continues through May 6. (U.S. Army photo by Sgt. Armondo Borboa, 2-162 IN BN Public Affairs).