A blockbuster rocket-buying agreement has been signed between the Air Force and United Launch Alliance, the supplier of boosters for national security spaceflight.

ULA signs deal to deliver three-dozen booster cores The deal aims to produce 36 booster cores for the Pentagon's use over the next few years of Atlas 5 and Delta 4 Evolved Expendable Launch Vehicles. Delivery of the rockets through 2017 comes at a savings of $4.4 billion over previous estimates in President Obama's FY 2012 budget.
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