A roomful of patients have blank stares as they eye medical students and professionals inside a $3.3 million simulation laboratory at the Dayton VA Medical Center . Not unlike any other hospital patient, they have name bands, hospital gowns and IV drips. They have a heartbeat, a pulse and some receive oxygen. But these aren't real people, just advanced mannequins, some costing as much as $250,000. Just a few feet away in a control room, instructors program challenging scenarios, and according to