Astronaut Carl E. Walz, mission specialist. Official Government Photo not covered by copyright.
NASA
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<li><bdo lang="en" dir="ltr" title="archived on 14 May 2016 at the Wayback Machine"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160514133909/http://www.jsc.nasa.gov/Bios/htmlbios/walz.html">Biographical Data Carl E. Walz (Colonel, USAF, Ret.)</a></bdo></li></ul>