Mark Kelly appears in a video urging service members to refuse illegal orders, and the Pentagon said Pete Hegseth has escalated a preliminary review into a formal command investigation that officials say could allow recalling Kelly to active duty for court-martial or administrative measures.Kelly, a retired Navy captain and Arizona senator, and his attorneys say any proceeding would be unconstitutional and an extraordinary abuse of power while legal experts warn that charging a sitting lawmaker would be extremely difficult, and critics contend the probe risks politicizing the military justice system.