What we see is essentially no security at the airport for these incidents to go on for this long. Despite supposed increased security since 9/11, it's only as good as the enforcement of that security and as anyone who flies knows, most agents checking bags, doing the x-ray,etc are black women who damn sure won't lay their life on the line to prevent an incident. The doors to the planes are wide open before and during boarding, and often the cockpit is even open before a flight is secured for take off. If you were a terrorist you could send 100+ aggressive terrorists and straight bumrush through the light security and take over the whole airport Taliban style, like antifa did with police precincts, and entire cities. Only option to call cops would take too long if an airport attack was planned right like a bank robbery. Even the NSA agents with guns couldn't shoot enough people who are suicidal anyway. And wouldn't be able to tell who is innocent or a terrorist. All of our security after 9/11 is still based on the premise that a terrorist is going to ask "may I please board this plane?" as opposed to just taking it.