A look at CliniSpace, a multiuser, online virtual hospital where real doctors and nurses expand their training by treating virtual patients. The emphasis is on making the right decisions quickly in high pressure situations, such as mass casualty incidents. CliniSpace won the 2011 Grand Prize of $25,000 at the Federal Virtual Worlds Challenge, sponsored by the US Army Research Lab. The two guests are the co-founders of Innovation in Learning, the company that created CliniSpace. Wm. LeRoy Heinrichs, MD, PhD, is Executive Medical Director, and Parvati Dev, PhD, is President and CEO of the company.