It's hard to imagine that a plane that large crashed without their being something on satellite photos or other data. Without any evidence of a crash showing up yet, one has to wonder if that plane was successfully landed at an abandoned airfield.
It's all too weird.
It is a scary thought. Successful hijack and land a huge 777 somewhere and avoid detection. Outfit it with a nuke dirty bomb fly it to America. Maybe this is what Zawahiri has been plotting since 911. Return to missed target of flight 93.