Complex sentence: As part of the U.S. Air Force's FY 2015 budget, the service is considering retiring the entire A- 10 Thunderbolt II fleet and other single-mission aircraft to prioritize multi-mission aircraft and keep future procurements on track.
Split into simpler sentences: As part of the Air Force's FY 2015 budget, they are considering retiring the entire A- 10 Thunderbolt II fleet. The A- 10 and other single-mission aircraft are in danger to prioritize multi-mission aircraft and keep future procurements on track.