AIKEN, South Carolina, May 29 -- The U.S. Department of Energy's Savannah River Site issued the following news release: The massive, unique vehicle used to transport highly radioactive canisters at the Savannah River Site (SRS) has completed an important pit stop to ensure continued, reliable movement of the site's liquid waste mission. The Shielded Canister Transporter (SCT) carries the stainless steel canisters filled with glassified, high- level radioactive waste, one at a time, from the De  more