Delta built the more efficient TSA checkpoints that the TSA couldn't
Delta Air Lines paid for and installed a pair of "innovation lanes" at its hometown airport in Atlanta. The lanes are much better designed than the standard security checkpoints found at airports around the US, and the airline hopes it can double the throughput thanks to some clever ideas.
Rather than having TSA agents use hand-pushed carts to bring empty trays from the exit back to the entrance of the line, the new lanes use an automated conveyor belt system. And instead of having travelers stack up behind one another to drop off their belongings to be scanned, there are five different "divestment points" so faster travelers can drop off their bags and move on without waiting for a slower person in front of them.
http://www.theverge.com/2016/5/26/11793238/delta-tsa-checkpoint-innovation-lane-atlanta
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Of course, TSA will say if it wasn't for their cooperation, the system wouldn't work.
