Working on a field-school excavation at the South Cadbury Castle site in England the summer before starting college sealed David Bush's fate. "Although I went to college intending to take pre-med courses, I switched to anthropology my first year and have never regretted the decision," recalls Bush who is now director of the Center for Historic and Military Archaeology at Ohio's Heidelberg College. In 1988, he was asked to perform an assessment of the archaeological remains on Johnson's Island, site of a Union POW camp for Confederate soldiers. "I spent the next year and a half locating the prison compound, fortifications, dump sites, and other cultural resources on the island. After that, I knew this site could be something I would love to spend the rest of my career investigating. And now, in the spring of 2007, I find I am embarking on my fifteenth consecutive summer field school at the site."