Two sergeants disappeared near border with Turkmenistan this month . Sherman 's sister , Meredith , said in a statement to CNN affiliate WCVB in Boston , Massachusetts . ` The two men were detained by Turkmen authorities and later released, but their families have not been able to find them. Family said he jumped into river after seeing fellow soldier struggle .
Two sergeants disappeared near border with Turkmenistan this month . The two men were detained by Turkmen authorities and later released, but their families have not been able to find them. Family said he jumped into river after seeing fellow soldier struggle .