One unwelcome visitor to this afternoon's festival: The Baltimore City Fire Department, responding to a false alarm that emptied The Charles for about 15 minutes around 1 p.m. Theatergoers were forced out into the streets until the all-clear was sounded. Some wandered across Charles to the Tent Village, where a panel discussion of the state of film criticism was underway. Others sampled the used DVDs being offered for sale by Video American. Others took the opportunity to chat with their neighbor about how cool the festival has been so far.