Vietnam ""The year was 1968. We were on recon in a steaming Mekong delta. An overheated private removed his flack jacket, revealing a T-shirt with an ironed-on sporting the MAD slogan ""Up with Mini-skirts!"". Well, we all had a good laugh, even though I didn't quite understand it. But our momentary lapse of concentration allowed ""Charlie"" to get the drop on us. I spent the next three years in a POW camp, forced to subsist on a thin stew made of fish, vegetables, prawns, coconut milk, and four…