Since its founding in 1951, the Epidemic Intelligence Servicehas waged war on every imaginable ailment. With suitcases keptpacked, vaccinations at the ready, the EIS's little-recognizedmedical professionals and scientists are always on call. And whenan epidemic hits, the EIS will be there to crack the case, howevermysterious or deadly. Over the years they have successfully battledpolio, cholera, and smallpox, to name a few, and in recent yearshave turned to the epidemics killing us now--smoking, obesity, andgun violence among them.These professionals have not served withoutcontroversy. But for the most part, they have performed theirtasks--difficult, dangerous, or dead end--without fanfare, savingcountless lives in the process. The successful EIS model has alsospread internationally: former EIS officers on the staff of theCenters for Disease Control have helped to establish nearly thirtysimilar programs around the world. EIS veterans have gone on tobecome leaders in the world of public health in organization