Oregon Army National Guard air crews head across the flight line to their CH-47 Chinook helicopter to prepare for flight demonstrations at the Army Aviation Support Facility No. 2's Community appreciation open house, April 23, in Pendleton, Ore. The air crews with 2nd Battalion, 641st Aviation Regiment, demonstrated the Chinook?s heavy lift capabilities and versatility by sling-loading vehicles, firefighting water bucket drills and taking Air Force Reserve pararescue jumpers to high altitude for a parachute drop.