"It was a crazy decade that we went through," said Philadelphia airport CEO Chellie Cameron, who joined Mayor Kenney and other officials Monday to discuss the airport's economic importance to the region. While PHL was growing in the early 2000s, "it went off the cliff for a while, and then it started to come back," she said. "The good news is that we have recovered. We were able to hold our own and come out at the end with an economic impact better than where we were 10 years ago."