The U.S. military now says the chopper was fired upon from multiple directions. Classic North Vietnamese tactic -- induce the Americans to send choppers into a valley, coming to help American troops, right into a cross-valley ambush. I doubt if most of the American military leaders are even aware of that. If they are, they should receive a court-martial for sending 38 troops to their death's, but they won't.
When I listen to John McCain with his call for expanding the wars, I remember he graduated from the Naval Academy in the bottom five (5, not 5%) out of 800 in his class.