Entwistle's plane touched down at Hanscom Airport around 5:30 p.m., Wednesday, after the 6.5-hour flight across the Atlantic and a stop in Bangor, Maine.

"Mr. Entwistle was polite and courteous," said Acting US Marshal William Fallon, who escorted Entwistle from England with two deputy marshals. "He was not confrontational at any point."