As TacaCopaFlyer says, sometimes the fast-track line doesn’t save any time. There are four screening stations. The elite line gets sent to the one on the far right; the general line gets sent to any open station of the four. Crew members also use the elite line. Gauge things when you get there. If the elite line has a line, and if there’s not much of a general line, the general one might actually go faster.
But I've also flown on days when the general security line goes out the door onto the sidewalk.
