Not upset, that's true. Just loud. York usually doesn't have his audio output so high but this had surprised him completely. He hears the movement of the human coming towards him, but it isn't until Cal speaks that the android acknowledges him even being there.

"This has to be some sort of fucking joke. Right? How would the Agrii be able to even get my schematics?" York holds the papers so that Cal would be able to see what is easily blueprints for an android.

But there's two different sets of schematics.