Six Flags Great America and its Hurricane Harbor water park are bringing back their chaperone policy a week after shots were fired in the Great America parking lot.

Six Flags Great America re-implements a chaperone policy due to safety concerns, requiring minors under 16 to be accompanied by an adult. The policy is strict from July 17-20 and evenings after that.

A chaperone policy is being reactivated beginning Thursday at Six Flags Great America and Hurricane Harbor in Gurnee. Visitors 15 years old and younger must be accompanied by a parent, guardian or