 On Saturday afternoon, as many as 20 cars on the third floor of the Roco apartment garage discovered they had their tires slashed. Many of the renters pay an extra $140 a month to have parking in the attached parking ramp. They say there are cameras at the entrances and the stairwells, but none inside the parking garage. Residents have talked to police, but they say they were told there's not much that can be done without more evidence.