I saw in a different thread some back of the napkin math that he number of people-hours wasted by the TSA adds up to something like 500 lifetimes each year.

Terrorists would seriously have to step up their game to kill more than 500 people each year in the US, especially with passengers no longer operating under the "hijack just means a free trip to Cuba" assumption and actually fighting back.

This is something that I wish more people would understand. Yes TSA costs money, in the billions (but that is peanuts to the government) BUT what does standing in line cost the workforce? A lot of travellers are business travellers and they end up working less on the days they travel because of TSA. Waiting in line has a cost involved, and it is a tremendous one. And what about the cost to the airlines for missed flights?