In the wake of the 9/11 attacks, more than 50,000 rescue and recovery workers converged at the World Trade Center. Among them were the 62 members of Missouri’s FEMA Urban Search and Rescue task force. The experience at ground zero made many workers sick, with health problems ranging from asthma to post-traumatic stress disorder. St. Louis Public Radio’s Véronique LaCapra has this report about how the members of Missouri’s rescue team are doing.