Les Hiddens is still out there... I'm a big fan.
He worked on a few survival PAMs for the Australian Army, basically like our new Tyvek E&E maps... a map on one side, edible plants and survival tips on the other.
He is living in the north of Australia in a "Vietnam Veterans Community" and he is active in veteran's affairs and rights.
He used to drive a kickass Perentree Land Rover model. Neat hat.