"Alchemy...?" He examines Ed with a mix of doubt and curiosity. Since when could alchemy do that?

He gives a quiet sigh after a moment, grabbing the strap of his box to readjust it on his back. "Alright, well, whatever those are, you'll have time to explain. I'm going to need to take a look at that shoulder - and you're going to need to tell me what you've been doing with the light vein."