Original sentence: While attached to that post, he won second place in the Schneider International Seaplane Race at Norfolk, in November 1926, flying a special Curtiss racer at a speed of 231.3 mph (372.2 km/h) over seven laps of a triangular 50 km course
Edited sentence: While attached to that post, he won second place in the Schneider International Seaplane Race at Norfolk, in November 1926, flying a special Curtiss racer at a speed of 231.3 mph (372.2 km/h) over seven laps of a triangular 50 km course