United CEO Scott Kirby is apologizing to customers and his own employees after taking a private jet during a week when his airline was canceling thousands of flights. The airline confirmed Kirby flew from Teterboro Airport in New Jersey to Denver, Colorado, on Wednesday, and that the company did not pay for his flight. Teterboro is about 17 miles from Newark, New Jersey, where one of United’s largest hubs is located and which was the center of the airline’s meltdown this week. [Snip] But Transportation Secretary Pete Buttigieg, who oversees the FAA, pushed back on that criticism of his agency...