Air Dominance, what does it mean?

"April 15, 1953. Every Airman should understand the significance of this date, as it was the first day of a streak that has now lasted 60 years. According to Air Force and DOD historians, April 15, 1953 was the last time an American ground troop was killed by ordnance delivered from an enemy aircraft."

http://www.tyndall.af.mil/news/story.asp?id=123344479

Does the Air Force really deserve "all the credit" for this?
Shouldn't the goal be zero troops killed by ANY ordnance delivered from all aircraft?