Complex sentence: A the time, the Soviets were concerned that the shuttle was being used as a reconnaissance platform On October 10 1984 (STS-41-G), the Terra-3 tracking laser was used to fire a warning shot at Challenger as it passed overhead.
Split into simpler sentences: A the time, the Soviets were concerned that the shuttle was being used as a reconnaissance platform. On 10 October 1984 (STS-41-G), the Terra-3 tracking laser was used to fire a warning shot at Challenger as it passed overhead.