He finally gets around to it, going to Vietnam, to rub elbows with his old buddies. Supposedly, he wants to solidify relations to increase "trade", i.e., business deals. The per capita income of Vietnam is $350 a year. You can't do business with people who don't have money. I'm sure it's to build factories for Nike, etc.
Here's an old flick of someone who served in his place:
http://grunt.space.swri.edu/images/vn/recon/lee_14.jpg