ADeltaAirLinesflightboundforBeijingreturnedtoSeattleonThursdayafterapassengerinthefirst-classcabinassaultedacrewmemberbeforebeingsubduedbyothertravelers,aSeattl
The unsolved investigation of the 1971 hijacking of a Seattle-bound airliner and the disappearance of the enigmatic, dapper suspect dubbed D.B. Cooper, is now officially one for the history books, not the FBI.