When an ED is forced to close due to a disaster and requests delivery of a mobile unit called the Carolinas Mobile Emergency Department-1 (MED-1), "we like to think we can be mobile in 72 hours," says Tom Blackwell, MD, medical director for the Center for Pre-Hospital Medicine, Department of Emergency Medicine, at Carolinas Medical Center, Charlotte, NC, and one of the two physicians who spearheaded the development of the mobile unit.