An analyst has some leeway in proposing research missions in his territory. "The situation at LaGuardia was something I had noticed myself and thought should be revisited," Arcari explained. In his free time, he'd been driving past the airport and, nudged by curiosity, if not conscience, had made a little detour. He discovered that the Port Authority of New York and New Jersey, which runs the airport, had put up a few new road signs.