You could say the Trump administration did a huge favor to “ Disclosure Day ” by releasing a trove of America’s UFO files — excuse me, UAP files — just last month.

Disclosure Day, the new whistleblower thriller from Steven Spielberg, arrives in theatres today.

As the race goes on, the movie veers between comedy and suspense, action and contemplation, the sounds of squealing tires mixing with sober interludes that touch on belief, reason, trauma, self-govern...