With reinforced doors - pilots still come out to use the restroom. Flight attendants usually just block the aisle. People will fight back in the case of knives. But how much fighting back dk you think is going to happen if people have guns?

How long do you think it’s going to be before a pilot opens the door if a hijacker starts shooting people?

Airport security is by far not just in America with the only exception in my experience is that other airports don’t make you take your shoes off and some allow liquids in carryon