Arizona Sen. Mark Kelly speaks during a hearing on Capitol Hill in October. Kelly served in the U.S. navy as a fighter pilot before going on to become an astronaut. (Mariam Zuhaib/The Associated Press) The Pentagon says that it is investigating Democratic Sen. Mark Kelly of Arizona for possible breaches of military law after Kelly joined a handful of other lawmakers in a video that called for U.S. troops to refuse unlawful orders. The Pentagon’s statement, which was posted on social media on Monday, cited a federal law that allowsRead more