I'm not sure what you're trying to say here. From that list, there were 2 involving the US in the 90s and 4 in the 80s. Is the huge increase in disruption, inconvenience and intrusion for every traveller really necessary to cut that level of threat down?
And how many of the attempted hijackings since 2001 had anywhere near the impact of Madrid or London's train/bus bombs? If there's really terrorists trying to cause havoc, why aren't they taking this easy option?
You will notice that they were rolled out in the 70s as security screening started at airports. It was proven effective and unless you can make an argument why people wouldn't pose security threats now with no security checkpoints you won't convince any actual decision maker anywhere.
50s - none involving America. 60s - 5. 70s - 14 (3 of which, as far as I can tell with any fatalities).
However, I'm not really arguing against zero security at airports. What I'm arguing against is the ludicrous increase in security procedures since 9/11.
>It is currently difficult to execute. It won't be if we had no security
It's not difficult to execute bombings on trains, and they are hugely impactful when it happens. Yet they rarely happen. You seem to be ignoring this.
The 70s are the decade where there were many hijackings. That's also when air travel became more commonplace and huge jets were more widely in service.
In the 60s if you weren't a military person, foreigner arriving from or headed to home, or white guy with a suit, you'd be picked up on pretty quickly, security checkpoints or no. Also, we weren't exporting trillions of dollars to and fomenting unrest in the Middle East in those days.
In the 90s, I used to fly to Baltimore on Southwest to get drunk for $30 with friends for the weekend. If I couldn't make it, I'd give the ticket to someone else or sell it. Totally different universe and threat model than ye olden times.
I'm not sure what you're trying to say here. From that list, there were 2 involving the US in the 90s and 4 in the 80s. Is the huge increase in disruption, inconvenience and intrusion for every traveller really necessary to cut that level of threat down?
And how many of the attempted hijackings since 2001 had anywhere near the impact of Madrid or London's train/bus bombs? If there's really terrorists trying to cause havoc, why aren't they taking this easy option?