(Brad Davis/The Register-Herald) Dr. Scott Killmer, a surgeon at Raleigh General Hospital, poses for a quick photo as he demonstrates how the da Vinci robotic surgical system, a.k.a. "The Robot" works during a Register-Herald visit to the hospital Friday afternoon. One of his many assistants, Erik Daniels, stands by at right. During a procedure, Dr. Killmer will control the robot from where he's sitting, sort of like a video game. He just completed his 500th surgery using the da Vinci system.