Current, former military and police linked to riot

WASHINGTON -- As President Donald Trump's supporters massed outside the Capitol last week and sang the national anthem, a line of men wearing olive-drab helmets and body armor trudged up the marble stairs in a single-file line, each man holding the jacket collar of the one ahead. The formation, known as "Ranger File," is standard operating procedure for a combat team that is "stacking up" to breach a building -- instantly recognizable to any U.S. soldier or Marine who served in Iraq and Afghanistan. It was a sign that many at the vanguard of the mob that stormed the seat of American democracy either had military training or were trained by those who did. An Associated Press review of public...