Complex sentence: The United States Air Force began the GPS Block IIIF acquisition effort in 2016, and is expected to award a single manufacturing contract for all 22 space vehicles in 2019, estimated to be worth up to 10 billion dollars.
Split into simpler sentences: The United States Air Force began the GPS Block IIIF acquisition effort in 2016, and is expected to award a single manufacturing contract for all 22 space vehicles in 2019. The manufacturing contract is estimated to be worth up to 10 billion dollars.