The only Vietnam era book that I've read was
Bat-21 by William Anderson. I heard him talking on the radio just after he wrote the book. It's based on a real life story. The movie may be ok, but the book is GREAT!
Get this book!
Wiki
"On his 63rd mission, on April 2, 1972, Hambleton was aboard an EB-66E preparing a B-52 strike planned for the following days. Quang Tri, the area targeted, was reported by intelligence to contain around 30,000 enemy troops and while flying over it at 30,000 ft, the aircraft was hit by a North Vietnamese Soviet-built SA-2 Guideline surface-to-air missile. The only one of the six-man crew to eject safely, Hambleton floated to earth when a forward air controller, airborne with the USAF supporting the South Vietnamese response to the North’s offensive, saw his descent, communicating with him over his survival radio. He landed near a highway junction on a Communist supply route and was seriously wounded in the arm and back."