Friday morning began with delays at New York\u2019s LaGuardia Airport. That\u2019s not unusual\u2014New York\u2019s airports are famously balky. But this time, the cause wasn't something prosaic, like a blizzard. It was staffing. Because of the federal government shutdown, the airport didn\u2019t have enough Transportation Security Administration agents and air traffic controllers; things slowed to a ground stop.