The pre-check at E18 is disconnected from UA/B6 due to construction at E11-E17. This checkpoint always seems to be set up wrong - they have separate lanes leading up to the TSA agent, but afterwards the non-pre-check flyers end up in the pre-check lanes and it's always painfully slow.
They need to change that CLEAR lane to pre-check at E8. Does anyone even use it? I think i've only ever seen one person use that lane.