Conversation so far:
When did Chelsey Sullenberger join the military?
Chesley Sullenberger was appointed to the United States Air Force Academy, entering with the Class of 1973 in June 1969.
Did Chesley Sullenberger receive any awards during his time in the military?
In the year of his graduation at the United States Air Force Academy, 1973, Chesley Sullenberger received the Outstanding Cadet in Airmanship award, as the class top flyer.
What other notable things did Chesley Sullenberger do besides receiving the Outstanding Cadet in Airmanship award upon graduation at the United States Air Force Academy?
Following graduation at the United States Air Force Academy and his commissioning as an officer, the Air Force immediately sent Sullenberger to Purdue University to pursue a master's degree.

Question: What did he do following that?
Self-contained rewrite: What did Chesley Sullenberger do following being sent by the Air Force to Purdue University to pursue a master's degree?