A United Launch Alliance Atlas V space launch vehicle, which uses the Russian made RD-180 propulsion system awaits to be stacked at Space Launch Complex 41 at Cape Canaveral Air Force Station, Fla. A total of 10 awards have been made under the Booster Propulsion Technology Maturation Broad Agency Announcement (BAA) solicitation supporting technology maturation and risk reduction for rocket propulsion system development. The BAA awards are part of a comprehensive Air Force plan to transition off the Russian made RD-180 propulsion system used on the Atlas V rocket by investing in industry launch solutions . (U.S. Air Force Photo)