If the principal at Sandy Hook had had a handgun in her desk drawer that morning and the willingness to use it, things might very well have turned out differently.
The principal or anyone on staff. IMO, rather than an armed guard who’d be readily identifiable and easily taken out, these bans should be lifted for anyone without a criminal record whether it’s the principal, a teacher or custodial staff. Any perp with this mayhem in mind should not be advantaged by knowing that either no one is armed, or who is armed, or how many are armed.