^^^ pretty sure its still open. closing the tunnel would fuck to many motorists, and the planes on the runway would be a greater terrorist concern then the Mercy chopper’s that are a pretty good distance away (flying tigers didnt exactly have a short driveway)
and i have a feeling that tunnel is way stronger then it looks. i have a feeling they originaly built it bunker strength… massive amounts of steel and high strength concrete … if they hadnt they would have closed it after 9-11 due to security concerns