Now many of the investigators are beginning to think that Flight 370 was destroyed because of a fast-moving cockpit fire or another mechanical issue. This is because there has been no evidence at all that the plane was hijacked. The last ACARS message came at 1:07 AM, indicating no problem. The transponder stopped at 1:21. The next ACARS message, due to be transmitted at 1:37 didn't happen. However, ACARS is programmed to transmit any emergency situations immediately on receiving them and nothing like that was received by Malaysia Airlines.
Another event that suggests a hijack is that the course was reprogrammed not to return to the nearest airport, which would have been done in an emergency, but to head the plane out to sea, toward an airport in the Maldives 1800 miles away. On the Madlives, witnesses are reporting that, the morning after the disappearance, they saw a large white plane with red stripes on it fly over very low. Not one or two people, but many people.
Also, the plane's ascent to 45,000 feet and sudden descent back to 23,000 suggests that somebody was killing the passengers and cabin crew, and probably that there was, at that time, only one person alive in the cockpit. The cabin could have been depressurized and the oxygen masks could have been prevented from deploying from the cockpit. Death would have come very quickly to everybody aboard except whomever had access to oxygen.
If the plane was hijacked, there are two possible reasons: first, for the plane to be sold into the black market in the form of parts; second, to be repurposed as a flying bomb and flown into a major city. It will not appear in its current livery, but rather in that of another airline. It will be transponding normally and will appear to be off course. Probably, the hijackers will declare an emergency.
The result of this will be that air traffic controllers and the military will have very little time to make a horrific decision: shoot it down and possibly kill hundreds of innocent people, or risk letting it crash into a great city.
It seems to me that the hijackers--if the plane was indeed hijacked--really have gained the upper hand here. Stopping this plane, once it is on attack, is going to be very hard, because identifying what it really is will be very hard. I hope that those defending the most likely target countries: the US, India, China, Japan and Israel, understand that it is going to be very, very hard to identify this airplane for what it is in the final few minutes of its final flight.