Holy shit, I googled to learn more about McFarlane as a singer and discovered this...
On the morning of September 11, 2001, MacFarlane was scheduled to return to Los Angeles on American Airlines Flight 11 from Boston. Suffering from a hangover after the previous night's celebrations that followed his speech at his alma mater, the Rhode Island School of Design,[175] and with an incorrect departure time (8:15 a.m. instead of 7:45 a.m.) from his travel agent,[176][177] he arrived at Logan International Airport about ten minutes too late to board the flight as the gates had been closed.[176][177] Fifteen minutes after departure, American Airlines Flight 11 was hijacked,[178] and at 8:46 a.m. it was flown into the North Tower of the World Trade Center, killing everyone on board