WASHINGTON (AP) — The Pentagon says it’s investigating Democratic Sen. Mark Kelly of Arizona over possible breaches of military law after the former Navy pilot joined a handful of other lawmakers in a video that called for U.S. troops to defy “illegal orders.” The Pentagon’s statement Monday cited a federal law that allows retired service members to be recalled to active duty on orders of the defense secretary for possible court martial or other measures. Kelly said he upheld his oath to the Constitution and dismissed the Pentagon investigation as the work of “bullies.” It’s extraordinary for the Pentagon to directly threaten a sitting member of Congress with investigation.