Complex sentence: As the official Johnson Space Center (JSC) Propulsion Systems Development Facility, WSTF participates in propulsion systems testing, with test expertise in hypergolic propellant handling and training, and it is the Shuttle Fleet Leader for testing orbital maneuvering and reaction control subsystems.
Split into simpler sentences: As the official Johnson Space Center (JSC) Propulsion Systems Development Facility, WSTF participates in propulsion systems testing, with test expertise in hypergolic propellant handling and training. It was the Shuttle Fleet Leader for testing orbital maneuvering and reaction control subsystems.