WASHINGTON, April 17 -- NASA issued the following news release: * * * Going Home: NASA Retires S-3B Viking to POW/MIA Museum After supporting the center's research missions for more than a decade, NASA's S-3B Viking aircraft is moving on from NASA's Glenn Research Center in Cleveland to begin a new and honorable assignment. The aircraft is heading to the National POW/MIA Memorial and Museum in Jacksonville, Florida, where it will be on display, honoring all Prisoners of War (POW), those Miss  more