US$1.7 billion to upgrade B-1B and B-2 bombers

The US Air Force plans to spend about $1.7 billion over the next five years to upgrade the B-1B Lancer and B-2 Spirit strategic bombers, according to Pentagon budget documents.

The US Air Force plans to spend about $1.7 billion over the next five years to upgrade the B-1B Lancer and B-2 Spirit strategic bombers, according to Pentagon budget documents.