It was the D/E United Concourse
I know there are low yield times when they don't offer the lines
It was the extremely unpleasant response from TSA after seeing the sign for elites which wasn't just turned away but papered over
Two different TSA agents couldn't/wouldn't tell me whether this was permanent
United later told me it was not
But again the process has become so intrusive that those things that make it worse simply drive down business.