On the weekend of May 19-20, 2007 Chuck's Parking Service coordinated and directed over 40,000 people that visited Jet Propulsion Laboratory (JPL), a division of NASA, in La Canada Flintridge. The event was JPL's annual open house that allowed the general public to view the laboratories where all of the Mars rovers are produced and operated. We directed all guests to park within the 3 parking lots on the campus grounds.