I once chased a kid whose student-pilot certificate was revoked, which is kind of like being expelled from kindergarten. Shortly after his first solo, he used the PA-28 to chase a newly married ex-girlfriend down the main drag in Connersville, Indiana. The new husband had collected her after work at Kroger's, and city employees on the fourth floor of the county courthouse were startled to see an airplane whiz by, below eye level, in hot pursuit of the pickup truck. Then there was a pipeline patroller I actually stalked and finally nailed for busting his 200-foot waiver near Indianapolis' Geist Reservoir, but this one had a sad ending. While the investigation was in progress, I moved to the Cincinnati district. A few weeks later a pipeline patroller hit a fence near Wilmington, Ohio. It was a fatal, and my boss handed me the crumpled, stained letter of investigation with my signature that they found on the body — the letter I'd sent to him in Louisiana from the Indianapolis FSDO.