How many people have built a bridge? #USArmy Soldiers conduct complex operations at Camp Grayling, Mich., as Chinooks sling load bridging sections from Sault Ste. Marie's 1437th Multi-Role Bridging Company. U.S. Army video by Lt. Col. John Hall | U.S. Army

CH-47 Chinooks flying over the Lincoln Memorial in celebration of the Army's 250th anniversary. | And We Know

Whoa! 4 Chinooks flying very low, heading south. Flight radar had them at about 1,300' Very cool | Meteorologist Aubrey Urbanowicz