It's another convoluted tale from the Pentagon spin machine, one that they're hiding under the cover of Iraq, Sandra Day O'connor, Tom and Katie and Brooke, and the rest of the white noise.
You can read the mainstream media versions of the latest bad news from Afghanistan here, here, and here.
Here's the bottom line. An "elite group" of US forces got trapped in a firefight with Afghan insurgents, probably elements of the Taliban. (Remember the Taliban? They're the bunch we "ousted" from Afghanistan four years ago.) The US forces on the ground called for back up support. A special operations helicopter loaded with Navy Seals flew in to rescue them and got shot down by a rocket propelled grenade--a tactical engagement that Lieutenant General James Conway, director of operations (J3) at the pentagon called "a pretty lucky shot against a helicopter."
A "pretty lucky shot" my ass, General. The Taliban characters who blew that helicopter away knew exactly where it was going to land, and they placed their RPG team there. They knew where it would land because they've observed our tactics and know our capabilities. They knew what sites in the area constituted suitable landing zones. They also knew that the "stranded" team under attack would call for airborne support.
What Pentagoons like General Conway don't want to admit to the American public is that a handful uneducated guerillas fighting with low tech weapons can defeat the most elite elements of our "best trained, best equipped" military.
Oh, did I mention? They found the bodies of the guys who went in on the helicopter, but they haven't found the guys the helicopter went in to rescue in the first place.