The aircraft was parked on the hardstand at Baghdad Int'l Airport When it received incoming fire. The photo you are looking at is or is very similar tothe official Army Safety Center picture taken. .50cal/12.7mm rounds, due to their weight, punch very neat holes, not ragged like those in the picture. If it took fire in the air, the holes would be oval in nature, and the nature of the holes are very horizontal/flat. .50cal or even small arms fire striking the aircrew would leave blood, on the seats, windshield, and would be dispersed by the rotorwash throughout the cockpit. If there were casualties, we would immediately yank the armor, the seats etc, leaving a bare bones cockpit, as they would be examined in great detail. Look closely at the pitch change links on the rotor head, the -58D rotor spins at an ungodly rate, with those peppered PCL's there was no way they could of flown back, the centrifigual force would of bent them as their strength became compromised due to shrapnel damage. Your friend may have been mistaken, there has been -58D's that have sustained onboard injuries/casualties, it wasn't this bird though.
I saw this aircraft in its current state 4 days after the fact, and got the information first hand by those who witnessed it.