"Hold his arm." He motioned to where, swabbing Castiel's arm. Normally this was done with an ultrasound and xray to confirm placement - but he didn't need that, he could see without it.

As soon as Chuck was in place to hold Castiel's arm still, he pulled the packet of tubing open. "This will pinch more than an IV at first, and there might be some odd sensation as it's placed, but it shouldn't hurt." A PICC line was, at least here, nothing more than a large bore IV, the difference was the catheter.