Was Malaysia Airlines Flight 370 Commandeered And Hidden?

US officials are speculating on new possibilities as six days have passed with no sign of missing Malaysia Airlines Flight 370, considering it may have been .  As the Wall Street Journal reports,

“U.S. counterterrorism officials are pursuing the possibility that a pilot or someone else on board the plane may have diverted it toward an undisclosed location after intentionally turning off the jetliner’s transponders to avoid radar detection, according to one person tracking the probe….

…But the huge uncertainty about where the plane was headed, and why it apparently continued flying so long without working transponders, has raised theories among investigators that the aircraft may have been commandeered for a reason that appears unclear to U.S. authorities. Some of those theories have been laid out to national security officials and senior personnel from various U.S. agencies, according to one person familiar with the matter.”