"R. Hubbell" wrote in message
news:fIFJb.99695$pY.17255@fed1read04...

Do the sky marshals guard every emergency exit? What would happen if a
terrorist opened and emergency hatch at 36,000 ft? Can they be opened at
all
when the plane is at altitude?


Well, if they can be opened at altitude, the terrorist would be the first to
depart. So what would his purpose be in opening one?