Northrop Grumman B-2 Spirit – Cost: $2 Billion

The Northrop Grumman B-2 Spirit looks like something straight out of a sci-fi movie. It operates like one, too. Thanks to its flying wing design, it can go practically undetected by radar technology despite being 69 feet long and having a wingspan of 172 feet.

What’s more, the B-2 Spirit is a quiet aircraft and can only be heard coming once it’s already passed overhead. That being said, these abilities make the stealth bomber plane a standout in the military world. According to CNN, around 21 B-2s are still in service for the United States Air Force.