The illustration is from STAR SHIELD and the Legacy of Ronald Reagan By Michael Schratt [PDF]
Art by John MacNeill.
It depicts the famous Hudson Valley UFO during one of it’s appearances, this particular one over the Taconic State Parkway in New York on March 24, 1983.
It can be seen just after the 1:15:00 mark in this video www.youtube.com…, wherein Michael Schratt discusses the Hudson Valley Boomerang.
Very nice artwork. Captures the scene well. I quite like it.