Col. Brock, Grayling Air Gunnary Range commander participates in Joint Terminal Attack Controller exercises during Operation Northern Strike. The second annual exercise showcased not only the integrated combat capability of the Michigan Air and Army National Guard, but also highlighted the state's primary training facilities at Camp Grayling Joint Maneuver Training Center and the Alpena Combat Readiness Training Center, both located in northern Lower Michigan. Units and personnel from Selfridge Air National Guard Base and the Battle Creek Air National Guard Base also participated in the operation, along with support from Army, Marine Corps, Coast Guard and Air Force units from around the state and Great Lakes region. The exercise also featured an international flavor with a half-dozen combat controllers from Latvia - one of Michigan's two State Partnership for Peace partner nations - and from Canada participating in the exercise. In all, 29 different units from 16 states, plus the two international partners, participated in the exercise.