Why did mike go back to Vietnam?

Rating: Null/10 (23 December 2011)

Mike went back to Vietnam because one of his closest friends, Nick, was still there. Mike promised Nick at the beginning of their tour that they would both get out of Vietnam together. At first mike thought that Nick was dead, but then when he found out that Steve had been receiving money, he knew right where it came from. In the end Steve had become a crazy heroin addict and kills himself after Mike buys him out of the game. Although it meant witnessing his friends death, it was still better for Mike to be there to have known that he did everything in his power to save Nick. That experience changed Mike for probably the rest of his life.