Complex sentence: Tibbets was convinced that the bombers of the future would be jets, and became involved in the Boeing B-47 Stratojet program, and he subsequently served as B-47 project officer at Boeing in Wichita from July 1950 until February 1952.
Split into simpler sentences: Tibbets was convinced that the bombers of the future would be jets, and became involved in the Boeing B-47 Stratojet program. He subsequently served as B-47 project officer at Boeing in Wichita from July 1950 until February 1952.