Currently sitting at LGA awaiting a slightly delayed flight. At entry to security screening lines this morning, regular line indicated 2 minutes, pre-check line indicated 1 minute. I went through pre-check line, took 5 to 8 minutes, don’t know how long regular line took. Upon looking back at the screening lanes from airside, main difference I noticed was pre-check lanes were going through metal detectors and regular lanes were going through millimeter wave body scanners (with their shoes on).

I was wearing a belt with a metal buckle and had a couple of tissues and a small Victorinox tool (without a knife blade) that looks like a small Swiss Army knife in my trouser pockets. As for many trips through metal detectors over the past 10 years, wearing the same belt and with the same Victorinox tool in my pocket, the metal detector did NOT alarm. Had I gone through the regular screening line, I probably would have had to remove my belt and all items from my pockets, and spend a few minutes explaining to one of the screeners that the Victorinox tool does NOT have a knife blade and therefore it’s TSA “safe”. To me, that’s the main advantage of pre-check.