Defense Secretary Lloyd Austin on Wednesday ordered military leaders to spend time talking to their troops about extremism in the ranks of the U.S. armed forces, an issue that has been on the Pentagon’s radar for some time and one that its newly-appointed chief has vowed to tackle. Chief Pentagon spokesman John Kirby said Austin met with all of the military service chiefs and secretaries on Wednesday and told them he was ordering a “stand-down” by all units in the next 60 days. While details of the initiative are still scant, Kirby said Austin is determined to address extremism in the ranks of the U.S. armed forces and is gathering more information about how best to address the problem. “We don’t know how we’re going to be able to get after this in a meaningful, productive, tangible way and that is why he had this meeting today and that is …