A Korean Air jetliner made an emergency landing at a military base on Vancouver Island Tuesday after the airline received a bomb threat, authorities said. It was Korea Air\'s second such threat in two days, the Canadian Broadcasting Corp. reported. Flight 72, a Boeing 777, had taken off from Vancouver International Airport about 2:30 p.m., bound for Seoul with 149 people on board, the CBC said. A Korean Air spokesman told the network the aircraft was off the coast of British Columbia was diverted to the military base after a threat was called in to the airline\'s Los Angeles office. Two US Air Force F-15 fighter jets were scrambled from a base in Portland, Ore., to escort the jetliner, Victoria\'s Search and Rescue Co-ordination Center said. The plane landed without incident about 5:50 p.m. It was not clear when the passengers would resume their travels. On Monday Korean Air Flight 72 was the target of a phoned-in threat, forcing a 2-hour delay in take-off, James Koh of Korean Air\'s Vancouver office said. Koh said the caller spoke English and voice recordings were made of both calls.