Complex sentence: NASA astronaut Theodore Freeman was killed in 1964 when a goose shattered the plexiglass cockpit canopy of his Northrop T-38 Talon, resulting in shards being ingested by the engines, leading to a fatal crash.
Split into simpler sentences: NASA astronaut Theodore Freeman was killed in 1964 when a goose shattered the plexiglass cockpit canopy of his Northrop T-38 Talon. Shards were ingested by the engines, leading to a fatal crash.