Every time I take photos and videos of Chinook helicopters, I am too close and getting buffeted by the amazing wind from their blades. A reasonable distance from an Apache or Blackhawk helicopter is just too close to the big double-main-rotor Chinook.
Four Chinooks just after starting their engines on the flight line.
The moment of take off. I am behind a metal emergency equipment container so I don't get blown over.
Another takeoff. You can see the flattened grass from the wind.