Other mistake: During the big protest march scene which is supposed to have taken place in the early '70's, one Vietnam vet who is sitting in a wheelchair is clearly wearing a pair of high top Reebok sneakers introduced in the late '80's.

Born on the Fourth of July (1989)
Ending / spoiler
Directed by: Oliver Stone
Starring: Tom Cruise, Raymond J. Barry, Caroline Kava, Josh Evans
Ron decides to start protesting in Anti-war movements after his trip back from Mexico, and becomes a pro-human rights activist.
Anthony
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Ron Kovic: People say that if you don't love America, then get the hell out. Well, I love America.
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Answer: He doesn't see anything. He hears his blood dripping back into the makeshift machine the doctors have set up and realizes it isn't working properly. In the previous scene he was told that if they couldn't get the machine to work, he would never walk again.
No, in the previous scene he was told that if they couldn't get the machine to work, he would lose his leg. He was already told he would never walk again.