Posted: Sat Sep 06, 2014 3:32 pmAre there maybe your answer ..
"After it was unable to communicate with the plane on Friday morning, the FAA contacted NORAD, which said it dispatched two F-15 fighter jets to investigate the aircraft at 11:30 a.m. These pilots saw that the unresponsive plane’s windows were frosted when they approached, a spokesman for NORAD said. "
Very similar thing happened to a golfer 10 years, think from memory was a Letjet or along those lines .. flew from Florida - it crashed in around Seattle - Washington state area , sure sporting people will recall, they come to the same conclusion the aircraft de-pressurized .
They all simply went to sleep.