VOLK FIELD, Wisconsin--Senior Airman Sergey Klebleyev, from the New York Air National Guard's 106th Civil Engineering Squadron, clears a fallen tree with a front-end loader during a route clearing exercise at Volk Field in Camp Douglas, Wis., July 15. The training was part of Patriot Exercise 2013, a National Guard domestic response exercise that included both National Guard and Reserve units from 26 states and local civilian agencies.