Player Embed Code: Download Embed Share Alaska Guardsmen Celebrate 10 Years of Operational Ground Based Missile Defense System Alaska National Guard Sept. 30, 2014 | 2:17 Alaska Lt. Gov. Mead Treadwell, Acting Adjutant General for the State of Alaska Brig. Gen. Mike Bridges and other distinguished guests joined Guardsmen from the 49th Missile Defense Battalion, Alaska Army National Guard, to commemorate the 10th anniversary of the Operational Ground Bases Midcourse Defense System at a ceremony held at the post theater on Fort Greely, Alaska, Sept. 30. Available in high definition.