Sea Knight shootdown

Very jerky al Q video (with, oddly, a singing chorus) of the missile shootdown of the CH-46 Sea Knight over Iraq this past Wednesday, Feb. 7. The crew and passengers obviously had plenty of time to realize what was happening before the helicopter was engulfed in flames and crashed. Freelance embed Bill Roggio, a former Army officer with signal and infantry experience, says his sources say it could have been a Russian-made Strela 3 shoulder-fired missile provided by Iran. If so, how long will we let this go on?