UPDATE Fourth new Oath Keeper was arrested today, Jonathan Walden, 48, of Birmingham, Ala., a trained EMT who U.S. alleges volunteered to join a Quick Reaction Force, and brought "Warrior," his trained German Shepherd security dog into the Capitol. charge: https://t.co/vkqu5Ndcp5 https://t.co/bcCJVjzyeP

— Spencer Hsu (@hsu_spencer) June 3, 2021