David Crosby
Music  Military connection 

 Inside The LC: The Strange but Mostly True Story of Laurel Canyon and the Birth of the Hippie Generation by Dave McGowan

[vid] Cross-Generational Programming Part 2   Barrymore, Drew

Quotes
“I’d have to say that, personally speaking, Crosby was worse for the good feelings of [the local] rock’n’roll [scene] than Manson was.”
Terry Melcher Inside The LC:

The figureheads of all the big LC bands--Frank Zappa,...John Phillips,...Jim Morrison,...David Crosby,...Steven Stills, on and on, every one of these guys is a product of the military intelligence establishment...I find it very hard to believe that the only people in the country who had musical talent happened to be sons and daughters of the Military community...Jackson Brown, Amy Lou Harris.. Interview with Dave McGowan about Laurel Canyon

Another of those icons, and one of Laurel Canyon’s most flamboyant residents, is a young man by the name of David Crosby, founding member of the seminal Laurel Canyon band the Byrds, as well as, of course, Crosby, Stills & Nash. Crosby is, not surprisingly, the son of an Annapolis graduate and WWII military intelligence officer, Major Floyd Delafield Crosby. Like others in this story, Floyd Crosby spent much of his post-service time traveling the world. Those travels landed him in places like Haiti, where he paid a visit in 1927, when the country just happened to be, coincidentally of course, under military occupation by the U.S. Marines.
    If there is, as many believe, a network of elite families that has shaped national and world events for a very long time, then it is probably safe to say that David Crosby is a bloodline member of that clan .... If America had royalty, then David Crosby would probably be a Duke, or a Prince, or something similar (I’m not really sure how that shit works). But other than that, he is just a normal, run-of-the-mill kind of guy who just happened to shine as one of Laurel Canyon’s brightest stars. And who, I guess I should add, has a real fondness for guns, especially handguns, which he has maintained a sizable collection of for his entire life. According to those closest to him, it is a rare occasion when Mr. Crosby is not packing heat (John Phillips also owned and sometimes carried handguns). And according to Crosby himself, he has, on at least one occasion, discharged a firearm in anger at another human being. All of which made him, of course, an obvious choice for the Flower Children to rally around. PART 1 Inside The LC: The Strange but Mostly True Story of Laurel Canyon and the Birth of the Hippie Generation by Dave McGowan

Before and after (visual)