Cancer tumors doctors couldn't touch may soon become fair game. Alex DeMetrick reports the University of Maryland will be the first East Coast medical center to offer cutting edge proton therapy. Inside the newest building at the University of Maryland Medical Center, technicians are working on some of the newest cancer technology?a proton therapy center. Like a small scale linear accelerator, it's still a city block long and designed to go after cancer tumors doctors can't normally treat. "It allows us to treat much larger tumors, much larger targets, much more complicated diseases. For example, head and neck cancer," said Dr. Minesh Mehta, director of the University of Maryland Proton Therapy Center.