MARYLAND HEIGHTS, MO (KTVI)-- The Maryland Heights Police Department stepped up patrols at the Kenny Chesney concert Thursday.
The move comes after his last concert resulted in nearly 75 arrests.
Hours of tailgating leading up to the concert is blamed for the problems.
"That is just people taking the alcohol out of control," Chesney fan Miranda Malone said. "Act your age."
Tailgating is illegal in the amphitheater's parking lot, so the chief of police said he did not expect any big problems.
"We have riot trained officers," Chief Bill Carson said. "He has played here twice before, and we have not had any serious problems."
Carson also pointed out that the Pittsburgh concert was at a football stadium that holds more than 50,000 fans.
"The amphitheater is half that," he said.