When a plane comes down in 1 piece and on fire, what does that usually mean..a bomb blew it up?
FWIW:
http://www.cnbc.com/id/101485921
NBC News reported Wednesday that US intelligence satellites detected no signs of an explosion around the time the plane went missing, which one official called “vexing.”
The official, who spoke on condition of anonymity, said that analysis of data from “national technical means” –- a euphemism for spy satellites -– found nothing “to corroborate or indicate a midair explosion” in the period surrounding the jet’s disappearance on Saturday (Friday in the U.S.).