fighter jets – world

1.Northrop Grumman B-2 Spirit – $2.1bn The Northrop Grumman B-2 Spirit is a US Air Force (USAF) heavy-penetration stealth bomber launched in 1989. The aircraft can infiltrate complex and dense air-defence shields, while it is capable of all-altitude attack operations up to 50,000ft. B-2’s original unit cost was $737m, making it the most expensive aircraft