This video is called 2 Canadian soldiers die in Afghanistan helicopter crash.
From the New York Times in the USA today:
KABUL — Four American soldiers were killed Monday when two helicopters collided in flight in southern Afghanistan, a military spokeswoman said, adding that gunfire from insurgents was not to blame.
Another helicopter crash on Monday, in western Afghanistan, involved American and Afghan soldiers and caused “deaths and injuries,” said the spokeswoman, Capt. Elizabeth Mathias.
She would not specify an exact location of the crash but said the military was “98 percent sure that insurgent activity was not involved.”
The rate of civilian casualties in Afghanistan during 2009 has increased exponentially if compared with previous years: here.