File:CH-47 2.jpg

Summary
Boeing CH-47 Chinook is the most common dual rotor helicopter

deployed today. https://en.wikipedia.org/wiki/File:CH-47_2.jpg

'Soldiers from the 101st Airborne Division of Fort Campbell Ky.,

simulate a sling load of a Howitzer with an CH-47 Chinook

helicopter at Fort Benning, Ga.