Unknown soldier: 1 forensic anthropologist, 27,000 Canadians missing in action

Sarah Lockyer, 31, is the tiny program's co-ordinator and lone forensic anthropologist. She travels twice a year to France to study the remains of Canadians uncovered by construction workers or farmers in old battlefields increasingly invaded by modern-day development. On the trip back, it's not unusual for her to be carrying a piece of human bone in her luggage.