 SPOILER: Prior to filming the end of the movie where Uncle Sam is  shot by a cannon, the film makers didnt notify local homeowners of  the large explosion they were going to be setting off at 2:00 AM.  When the explosion was set off many concerned neighbors called local  police and the explosion could be heard throughout the city. As a  result, the City of La Verne decided to reject all future requests  for movies to be filmed in La Verne.