Popular Mechanics – President Trump retreated underground amid Washington, D.C. protests. But how far down did he actually go?: “In the midst of ongoing protests of police violence and racial injustice around the U.S., President Trump was whisked away to a “White House bunker” on Friday night. An inside source told the Associated Press that Trump “spent nearly an hour in the bunker, which was designed for use in emergencies like terrorist attacks.”  There’s a whole city’s worth of stuff underneath the White House and other government buildings in and around Washington, D.C. But what exactly do we know about the bunker where President Trump would be?…”