I think we disagree on whether a solution is needed, though. No one's going to be able to use an airplane as a missile again, since cockpits are locked. No passengers will sit idly by while someone with a knife tries to do something, and any benefit of securing planes is completely dwarfed by the giant crowd of vulnerable people in the not-yet-screened lines.
Not only does this solution not solve the problem (unless you consider the problem to be "get re-elected" or "make my election contributors money"), but it centralizes vulnerabilities and makes any destructive event both more dangerous and easier to carry out.
Not only does this solution not solve the problem (unless you consider the problem to be "get re-elected" or "make my election contributors money"), but it centralizes vulnerabilities and makes any destructive event both more dangerous and easier to carry out.