The interviewer wants to ensure that you hold strong knowledge, and genuine interest, in the aerospace and defense industry. If you are familiar with the industry, you will know about some of the latest industry breakthroughs. Briefly discuss which one has caught your interest the most.
"There have been endless breakthroughs in our industry; however, I would say the one that excited me the most was the Falcon 9 Full Thrust. It's amazing to me that a partially-reusable launch system is in existence."
"The biggest recent breakthrough in our industry, in my opinion, was the Falcon 9 Full Thrust; however, there are so many from which to choose! May I ask which was your favorite breakthrough as of late?"