airplanes do have windows that open
airliners do have windows that open. they are in the cockpit and are used for a variety of reasons...including INFLIGHT to remove smoke. they are also used as emergency evacuation routes for the pilots.
don't believe me? fine.
while I" haven't flown the challenger, I have flown the DC9 and 737 and they have windows that open...many other jets do too.
on other jets there is a hatch that can be opened for a similiar reason.
Romney would be a great president.