Question about the original USAF Ravens (not the UAV)

[scarey]

Gentlemen,

My Uncle was a Raven during & after the Vietnam War. He recently passed away and I've always been curious as to what Ravens did. I asked him a few times and he would only speak vaguely of it. After using the great search button in the sky (google) and the PS.com search button I found little information on the USAF Ravens.
To make a short story long... I see many seasoned Quite Professionals on this Forum and I am asking if you had any experiences with the original Ravens who flew over Vietnam and Laos?

I have no desire to violate OPSEC.
I realize my question does not directly pertain to SF.
Thank you for your service and sacrifices and time.