President Donald Trump's pick for the highest-ranking military officer, retired Air Force Lieutenant General Dan 'Razin' Caine, will face a Senate confirmation hearing. Caine, who was plucked from retirement and relative obscurity, is the first nominee for the post who will have to be brought back to the military, promoted, and approved by senators. He will also require a presidential waiver due to not meeting technical qualifications. The Senate Armed Services Committee will scrutinize Caine to ensure he is apolitical, following concerns of politicization of the U.S. military. Caine's military career is unconventional, as he has never led a combatant command or military branch of service.