President Donald Trump said Thursday he will accompany District of Columbia police officers, National Guard troops and other federal personnel on a night patrol of the capital, an unusual instance of a sitting president joining frontline law-enforcement activity. Trump announced the plan during an interview on the Todd Starnes radio program, explaining that he wants a first-hand view of a new crackdown targeting crime, homelessness and illegal immigration. Describing the operation as “a sort of test,” he suggested similar deployments could be extended to other U.S. cities. The ride-along follows the administration’s decision to place Washington’s public-safety efforts under federal direction, a move city officials have criticized as undermining local autonomy. The White House did not specify how long the president will remain on patrol or what additional security measures will be in place.