Final preparations are being made for this weekend’s massive military parade in Washington, DC. Security fencing and barricades are in place throughout the nation’s capital and the Army has been laying down metal plates to prevent damage to D.C. streets when super-heavy tanks roll through the city. President Trump ordered the parade to celebrate the Army’s 250th birthday. Military displays on this scale are not common in the U-S. Critics say it’s an authoritarian display of power, but supporters view it as a once-in-a-lifetime chance to celebrate the Army’s achievements over two centuries.