New York Times reports 2 Apaches down and 30 others forced back back by fierce grenade and small arms fire 60 miles south of Bagdad.
The link was just taken off of Yahoo so I am trying to find the story again.
The crew of one was rescued but the other was captured.
Iraqi official media reports that untrained farmers brought down the helicopters with rocket propelled grenades and small caliber arms. These helicopters are used as airborne ground assault vehicles. They are well armored and use the most advanced weapons systems.
Apparently they tend to fly low to increase surprise and in large packs ("swarming") so that may leave them open to ambush from rockets.