Palantir, the data analysis and technology firm whose contracts with the federal government are expanding, and Coinbase, a cryptocurrency firm that donated to the president’s inauguration, also sponsored the event. Oracle, a database company whose co-founder is a close friend of Mr. Trump’s, received a shout-out on Saturday as a sponsor.

By some measures, President Donald Trump’s military parade has been years in the making. The event planned for Saturday will mark the U.S. Army’s 250th birthday, with thousands of soldiers and dozens of massive military vehicles and aircraft descending on the National Mall.

As Washington, D.C. gears up for an upcoming military parade, city officials are raising concerns about potential street damage from heavy military vehicles.