the janitor is better
He worked at the observatory, where one of his duties was being a docent to schoolkids taking field trips to the planetarium. His lectures later proved erroneous when he met Chuck Baker and snuck inside a secret military base containing captured Soviet and American scientific equipment from Earth. Lem realized that his planet was ignorant of outer space, with much of that ignorance due to government secrecy. Lem tried to get his race to realize Chuck is not an enemy.
For a full gallery of images of Lem. see Lem Korplog/Extra Pics