Where did you learn this? Please source your comment. As a former military aviator who knows a bit about combat actions and the checks, double-checks, triple-checks, quadruple-checks before weapons are released not to mention the after-action debriefs in minutia detail about every decision that is made I find your statement completely baseless. I've known pilots who've lost their wings (and promising careers) over stuff much less dramatic and completely under the public radar.
Unless they do things differently over in the Army Air Cav.
I honestly have no idea if the crew of the helicopter got medals or not. However, if they did, that would not have been unprecedented.
Back in July 1988, a US navy Cruiser, the USS Vincennes, while sailing in the Persian gulf, shot down a civilian Iranian Airbus commercial jet while the plane was inside Iranian air space. All 290 civilians on board, including 66 children were killed.
For that the crew of the USS Vincennes received the Combat Action Ribbon and the air-warfare weapons officer received the Navy Commendation Medal.