Forty years later, veterans still suffer rebound effects from inhabiting thick jungles during one of America’s most brutal wars. “Inside the Vietnam War,” airs tonite, December 28 at 8 p.m., in a special encore presentation on the National Geographic Channel. An outstanding memorial tribute by USA TODAY it features individual interviews of veterans from all 50 states and the District of Columbia. Marine Security Guard, Bill Newell stood post at the US Embassy in Saigon on April 29, 1975, when he got the news that two of his fellow Marines became the last Americans to die in that terrible war....