And the fact is that there's been some level of security since the 1970s or thereabouts after a fair number of hijackings. Any serious debate is about restrictions around liquids/knives/etc. (Some of which related to isolated incidents like the shoe bomber and others of which seem like pretty clear overreach--like I can't bring a hiking pole in carryon.)
A bus isn't going to fall out of the air and land in the ocean. A bus isn't going to be hijacked and flown into the top of a building.
And the fact is that there's been some level of security since the 1970s or thereabouts after a fair number of hijackings. Any serious debate is about restrictions around liquids/knives/etc. (Some of which related to isolated incidents like the shoe bomber and others of which seem like pretty clear overreach--like I can't bring a hiking pole in carryon.)