By Chris Gallagher WASHINGTON (Reuters) -“Zombie Killer” tomahawk axes were among the weapons that Donald Trump supporters recommended bringing to the Jan. 6, 2021, assault on the U.S. Capitol, an FBI agent testified on Thursday at the trial of five members of the far-right Oath Keepers. FBI agent Michael Palian read from what he described as a planning document prepared by Thomas Caldwell, one of the five on trial for charges including seditious conspiracy for their alleged role in planning the attack, which was intended to overturn then-President Trump’s election defeat. “Each team member sh…