It's still Stewart Air Force Base!
"Stewart Air National Guard Base The 105th Airlift Wing of the New York Air National Guard is based at Stewart Air National Guard Base. The former Stewart Air Force Base is also known as Newburgh-Stewart IAP and Stewart International Airport. Stewart IAP (ANG) is located in Newburgh, New York."
We moved in '72, at that time the plan sounded like it was to become a civil airport to take commuter traffic off of NY & NJ international airports.
Looks like its both National Guard (not AF) and civilian.
Thanks and FReegards!