Original sentence: In the summer of 2019, a former ULA employee claimed that Boeing, NASA's prime contractor for SLS, viewed orbital refueling technology as a threat to SLS and blocked further investment in it
Edited sentence: In the summer of 2019, a former ULA physicist revealed that Boeing, NASA's prime contractor for SLS, quashed any discussion of orbital fuel depots for over a decade so that SLS would have no competition with other commercial launch programs