<p><span class="deck"><lead_in> TODAY, NEARLY HALF</lead_in> a million men and women serve two-thirds of the country in a crucial volunteer service that began only recently, and only because a nine-year-old boy had witnessed a drowning.</span></p>
<p><span class="deck">A search begun in a Washington, D.C. boardinghouse 140 years ago continues today as a $100-million-a-year effort to reunite the U.S. military and American families with their missing soldiers.</span></p>