Was Korean Airlines Flight 85 a Simulated Hijack in a 9/11 Training Exercise?

Korean Airlines Flight 85 was a Boeing 747 with 215 people on board, flying from Seoul to New York. It was heading for a refueling stop in Anchorage when it began behaving suspiciously. Beginning shortly after 11:00 a.m. (this and all other times given are Eastern time), its pilots gave repeated but inconclusive indications that their plane had been hijacked, even though no hijacking had taken place. The Federal Aviation Administration (FAA) was alerted to the suspect flight shortly before noon, and it in turn notified NORAD. [1]
Concerns over whether KAL 85 had been hijacked led to the plane being diverted away from Anchorage. It was first redirected toward the remote airport at Yakutat, Alaska. But because of deteriorating weather around Yakutat and because the plane was running low on fuel, the decision was made to instead have KAL 85 land at Whitehorse Airport in Canada’s Yukon Territory. [2]
KAL 85 landed at Whitehorse Airport safely and without incident at 2:54 p.m. But only after the co-pilot was escorted off the plane and interrogated were officials able to determine that the flight had not been hijacked. [3]   link