When the B-2 Spirit glides silently through the night sky, it looks more like an alien spacecraft than a conventional aircraft. But here’s what makes it truly extraordinary: this $2.1 billion marvel ...

The B-2 Spirit has to perform extra-long missions, while providing less space and comfort for its pilots than transport ...

The B-2's development was so secretive that staff building it had to pass lie detector tests (Photo: Jeff Bolton) It's a piece of military aviation engineering so secretive that the people who built ...