Our hometown airport is very small and only recently added a TSA Pre-Check lane. So our experiences with lengthy security lines generally occurs on the return end of a trip or during multi-leg work travel.
A couple of years ago, I flew out of Austin, TX as part of one of those multi-leg work trips. Issues with the airline computer system created all sorts of problems and security lines were more lengthy than usual. It took 45 minutes to pass through security. And as I waited, I received an email from the U.S. Department of State with one of their recurring worldwide travel alerts and one of the safety points outlined in the email is to avoid large crowds. Oh the irony of receiving that email from our government while standing in a crowd created by that same government.
Fast forward to the Brussels and Istanbul airport bombing and those large lines seem ready-made for terrorist attacks.
This morning I read this article: http://thegate.boardingarea.com/why-airport-security-checkpoint-lines-should-be-short-and-quick-for-everybody/
I’m not sure what the solution is, but I agree with the author’s sentiment that it is only a matter of time until something similar occurs here.