responsibility, which led investigators to believe those options are not viability. the plane landed somewhere. as the months ticked by and no pieces of the plane were discovered some speculated whether it was possible the planed ha landed. but no communications from the people on board or hijack demands made that less possible. mechanical failure. mechanical failure is still being considered. rapid decompression. the plane suddenly loses cabin pressure and the passengers and crew become unconscious and the plane flies until it runs out of fuel and crashes. until there is more thaifd are all just theories leaving grieving families in limbo wondering what happened to those they lost. more than 9,000 firefighters are battling some 21 wildfires