Reddit reviews Bury Us Upside Down: The Misty Pilots and the Secret Battle for the Ho Chi Minh Trail

I want to say the book was "Bury Us Upside Down" where he tells the story that during Vietnam the CIA was flying O-1 Bird Dog to mark bombing locations for his F-100 squadron. He said the pilot would bring a crate of grenades with him and when shit got hot would start lobbing grenades out the window at the enemy.

Dick Rutan, Burt's brother owns this one. If you look in the mouth of the bird, there is an F-100 flying. Dick flew F-100s in Vietnam as a FAC. I highly suggest reading this if you have any interest in the subject matter.

I’d like to add Bury Us Upside Down by Don Shepperd and Rick Newman

As well as Tiger Force by Michael Sallah and Mitch Weiss