Complex sentence: After overflights began and the Soviets demonstrated the capability of tracking and attempting to intercept the U- 2, this estimate was adjusted downward; in August 1956, Richard Bissell reduced the number to six months.
Split into simpler sentences: After overflights began and the Soviets demonstrated the ability to track and attempt to intercept the U- 2, this estimate was adjusted downward. In August 1956, Richard Bissell reduced the number to six months.