Question 4, because I'm lame and picked the short one.

Rating: 8/10 (5 May 2011)

#4. Why does Mike go back to Vietnam to find Nick? Be specific with this one and use examples.
Mike goes back to Vietnam because he promised Nick that he wouldn't leave him there. Earlier in the movie, after Steve gets married and Mike goes for a late night gallivant in wearing nothing but his beard. Mike and Nick sit down against the pole of a basketball hoop. At this time Nick tells Mike that believe it or not he loves that town, he loves his job, and he loves going hunting with the guys. And Nick then makes Mike promise him that no matter what happens to not leave him over their and to bring him home. So later on, after Nick goes a little crazy, Mike hears that things aren't going great over their and they're about to get invaded. So Mike goes back to Vietnam to find Nick and bring him home and keep his promise.
p.s. Feel better Crave man, and don't worry about the doctors having done anything out of the ordinary to your knee. Laying eggs in patients are purely for those with really low resting heart rates, and said condition is most uncommon.