A plane carrying three American hostages rescued from leftist guerrillas in Colombia has arrived safely in Texas. The US military contractors _ Marc Gonsalves, Thomas Howes and Keith Stansell _ were held for five years by the Revolutionary Armed Forces of Colombia. Their plane landed at Lackland Air Force Base shortly after midnight Wednesday. The US Embassy in Bogota says the men, who worked for Los Angeles-based Northrop Grumman Corp., were the longest-held American hostages in the world. Ingrid Betancourt, who was seized while campaigning for president six years ago, was also freed Wednesday, as were 11 Colombian police and soldiers.