Yes, we do have standards for all the equipment used at the screener checkpoints, ... And they're recalibrated if they are moved. They're checked on a regular basis.

I think the main concern was with the aircraft frame.

We got a late start, and we did fall behind early, but we have since made up that ground.

If they operate within the parameters that we set out, yes, they will be safe.

It was a mutual decision between him and (FAA Administrator) Jane Garvey. He's going to pursue other opportunities outside the FAA.