Vox Pop

By DAVID ELLIS

CHART: NOT AVAILABLE

CREDIT: From a telephone poll of 500 American adults taken for TIME/CNN on July 18 by Yankelovich Clancy Shulman. Sampling error is plus or minus 4.5%. "Not sures" omitted.

CAPTION: Do you believe that any American MIAs are still alive in Vietnam?

With reporting by Sidney Urquhart