When thousands of National Guard forces and law enforcement officers locked down Washington during racial protests and the Jan. 6 riot four years ago, the blur of camouflage and helmets made it nearly impossible to tell the difference between cops and troops.

First lady Melania Trump offered a behind-the-scenes look at President Donald Trump's second inauguration in an exclusive "Fox & Friends" interview on Tuesday, detailing the events leading up to their historic White House return and their time spent with ...