WNBC News in New York City reports that the NYPD, working with Suffolk Country police and the FBI, have concluded there are no terrorism ties to be concerned about in connection with their discovery that a man, described only as an Egyptian engineer who entered the U.S. on a Sudanese passport, has designed an unmanned aerial vehicle capable of carrying more than 600 pounds of explosives. The engineer was assisted by a small group of men whom investigators surveilled as they drove a white van onto a tarmac, jumped out, and ground-tested the drone. There was no observation of the...