Corrected entry: After Jacob's harrowing experience in the subway at the beginning, we get an establishing shot of the New York skyline which includes the World Trade Center. The Trade Center was not completed until 1973--the same year the Vietnam War ended. Jacob would have been stabbed and died before it was there.
rbryant73
26th Apr 2003
Correction: The scene is supposed to be based years after Jacobs serving in Vietnam, thereby making the World Trade Center complete.