I know that security existed before the 90s (obviously due to the amount of armed skyjackings and bombings it was too lax). I don’t know when x-rays, magnetomet

I know that security existed before the 90s (obviously due to the amount of armed skyjackings and bombings it was too lax). I don’t know when x-rays, magnetometers and other radio imagining was first deployed at airports. But it was there for decades before 9/11.