 Barry Levinson (qv) had the main actors arrive in Baltimore a week  before filming began to get to know each other and build rapport.  Predictably, the young male actors went out on the town to clubs and  tried to pick up women. Sometimes they would use bogus stories about  what they were doing in Baltimore. Timothy Daly says he came up with  the most popular one, that they were engineers working on a rotating  rooftop restaurant.