Apollo 17 Commander Gene Cernan waves at NASA tourists from a lunar rover training vehicle.
NASA
<ul><li><a rel="nofollow" class="external free" href="https://www.hq.nasa.gov/office/pao/History/alsj/a17/ap17-72-H-1190HR.jpg">https://www.hq.nasa.gov/office/pao/History/alsj/a17/ap17-72-H-1190HR.jpg</a></li></ul>