Hospital personnel at Broward General Medical Center in Fort Lauderdale, Fla., wear protective masks Thursday, Oct. 11, 2001, as they stand outside the emergency room entrance. They donned the masks after five workers from Andrx Pharmaceuticals in nearby Weston were exposed to an unknown substance and brought to the medical center for testing after being decontaminated at the scene. (AP Photo/South Florida Sun-Sentinel, Robert Duyos)