I don't have any relatives that served in Viet Nam...
My dad said that they did do a little off shore patrolling at the beginning of Viet Nam when he was in the Navy, but luckily they never got involved in the fighting before he got out... They were there mainly for a show of strength by just being there... He got out somewhere between late 66 and early 67....
I think one of my grandpa's brothers got killed in WWII...