Published in U.S. News & World Report, March 21, 1988 (it's in an adaptation from the then-forthcoming book by Steven Emerson, Secret Warriors) :
"Quick Response: The custom Star Wars choppers used by Seaspray carrying commando units on an exercise"
Looks seriously legit.
I have only a scan of the magazine, maybe some hardcore researcher can get a paper copy and do a better job.
(BTW in case you're wondering, no, there is no other interesting photo in the mag article, and no pics at all in the book)