Twenty years have passed, far too quickly, since Roland Emmerich‘s epic Independence Day and so with the follow-up to that worldwide hit, Independence Day: Resurgence, being released today on Blu-ray and DVD, we take a look back at all the tech changes in such a short space of time… and there’s been a lot!

As the Fourth of July nears, satellite engineer David Levinson (Jeff Goldblum) investigates a 3,000-mile-wide mother ship that’s approaching Earth. Fortunately, 20 years earlier, nations across the world started to use recovered extraterrestrial technology to develop an immense defense program. When the alien invaders attack with unprecedented force, the U.S. president, teams of scientists and brave fighter pilots spring into action to save the planet from a seemingly invincible enemy.

Here’s your look back:

Independence Day: Resurgence is available to purchase today on Blu-ray and DVD.