The grand military parade that President Donald Trump had been wanting for years barreled down Constitution Avenue on Saturday with tanks, troops and a 21-gun salute.

The parade, honoring the Army’s long-planned 250th anniversary celebration and coinciding with Trump’s 79th birthday, is set to step off from the Lincoln Memorial under the threat of stormy weather in Washington and protests around the country tied to a turbulent week of immigration enforcement that has involved military deployment in Los Angeles.

Victory Parade after the first Gulf War celebrated a lopsided victory against an enemy army in the largest U.S. military operation since Vietnam.

In Washington, D.C., scores of people have shifted from the Army festival to the parade route, walking west toward the Washington Monument. The protests have—for now—mostly died down. It’s a hot, steamy Washington evening,