Originally Posted by
bocastephen
She possesses no authority whatsoever - you can tell her to go stuff herself, and continue on with your bags. If she complains, she can go summon a DL employee who will make the decision. The screeners have nothing to do with luggage size - only the quantity of items (1+1) are regulated.
Unfortunately, when any passenger is ~45 minutes away from doors closing and it's likely this power-tripping ID checker is going to call a real cop (and not a DL employee), most of those people are likely to just roll over and play dead (or do whatever she's demanding they do).
If she pulls this stunt on me personally again though, I will get her name and SFO badge number to let both the Delta/SFO station manager and the security guard company management know what's going on.