Complex sentence: The former Stewart Air Force Base is also known as Newburgh-Stewart IAP and Stewart International Airport, while the military portion of this now-joint civil-military airport is known as Stewart Air National Guard Base (Stewart ANGB).
Split into simpler sentences: The former Stewart Air Force Base is also known as Newburgh-Stewart IAP and Stewart International Airport. The military portion of this now-joint civil-military airport is known as Stewart Air National Guard Base (Stewart ANGB).