First Lieutenant Esther Y. Song is the Propulsion Engagement Program Manager of the Engines Branch, Air Force Research Laboratory, Edwards Air Force Base, California. She leads a team of six people in developing a standardized business process between public private companies and a $10.2 billion, 65-square mile geographically separated unit. She is responsible for capturing government engagement with industry to foster a partnership and streamline rocket propulsion research and development, tactical responsive space access, and more.

Lt Esther Song commissioned through the United States Air Force Academy in May 2019. After graduation, she was the Rocket Test Manager leading multiple hypersonic weapons and solid rocket motor programs in the Experimentation Demonstration Branch, Air Force Research Laboratory, Edwards Air Force Base, California. Prior to her current position, Lt Song served as Executive Officer to the Commander of Detachment 7, Air Force Research Laboratory, Edwards Air Force Base, California in 2020. She was the central focal point for providing direct support and administering programs deemed essential by the Commander for a detachment of over 40 active duty and reserve military members.