Actually, 2 5 is right down the middle of stars, but I add another .5 simply because the 26 pp. of documented appendices are ontereeting. Bingo! But this book is, I'm sorry to say, poorly written, and the author, Mr. Holcombe, who, he says, has spent his entire adult life tracking down UFO tales and those who have seen them, flies off in his own often very useless digressions, wanders about a great deal, and took what might have been a solid set of stories into a Hell of sideline observations, describing his friends, an occasional wife or two, and a writing style that made my teeth grind.
That said, there's about half a book here that's useful. The Presidents since Truman were either briefed or not on UFOs, Nixon gets the prize for being the most engaged in the UFO briefs (his hanging out with UFO collector Jackie Gleason is well known and still a hoot), covering some useful information, but so much of Holcombe is guessing and discussions and his own guessy opinions (that amounted to hills of beans) and "how long I spent in libraries....etc." made for a great deal of tedium, absolutely needless and deserving a nice spot on the cutting floor for long stretches. (Moreover, Holcombe tags a few former CIA officers - never "agents", thank you - as the wise men, gives a special place, on a guess, for James Jesus Angleton, and greatly overestimates - yes, guessing - the role of CIA.)
If you must have this book for your UFO library, then you must have this book. I bought it, and I'll keep it. But be prepared, though, for great patches of disappointment amid the occasional useful material.