© 2026 Delta One LLC
EXPERIENCE THAT INFORMS JUDGMENT.
“Trusted US-Korea defense consulting firm.”
Our VISION is to become a trusted go-to consulting firm that US and Korean companies and government entities find valuable advice and guidance from regarding US and Korea defense industrial cooperation and offset matters.
© 2026 Delta One LLC
OFFICERS
Proven officers drive your business forward with unwavering trust and commitment.
We deliver professional excellence based on integrity and flawless execution.
Hwa Yu
Founder & CEO
Hwa brings more than 20 years of experience supporting U.S.–Korea defense cooperation, including service at JUSMAG-K, U.S. Embassy Seoul, in DAPA liaison and Foreign Military Sales program management.
She combines an understanding of defense institutions with legal training and hands-on business development experience to help companies navigate complex decisions and build lasting cooperation.
She is a member of the District of Columbia Bar and a CMMC Registered Practitioner. She serves in leadership roles with several Korean-American professional and civic organizations in the Washington D.C. area.
Mirim Nam
Vice President
Mirim spent twenty years at the U.S. Embassy in Seoul as a Senior Economic Specialist for the U.S. Department of State. There, she analyzed Korea's industrial sectors and conducted Blue Lantern end-use checks, ensuring that sensitive technologies transferred to Korean companies were used for their intended purposes. Her career also includes serving as an economic and trade policy specialist at the British Embassy in Seoul and handling import and export affairs at a trading company. She holds a master's degree in economics from Yonsei University and completed doctoral coursework in North Korean economics at the University of North Korean Studies.
ADVISER
Top-tier, proven experts from diverse fields come together
to create a single, flawless value for your business.
James Grzella
Senior Advisor
James has over three decades of high-level, private sector/military experience. Over the years, he has built a solid reputation for his ability to provide world-class consulting and advisory services to key players within the aerospace and defense industries. Jim is recognized as a global industry expert who offers a unique combination of international business development and program management experience coupled with entrepreneurial expertise/leadership in developing collaborative solutions in diverse business and service sectors. He offers an unwavering commitment to excellence, dedication towards achieving success, and a sincere belief in his ability to provide dynamic leadership.
Duksan Ryu
Technology Advisor
Duksan is an associate professor at Jeonbuk National University, where his research focuses on physical AI and AI-related software engineering. He brings more than twenty years of experience in software research and development. He holds a master's degree from Carnegie Mellon University and a Ph.D. from KAIST.
Link to his Homepage
Spencer Lee
Partner in Korea
CEO of C&I Global Research. Formerly defense industry policy officer in Korea's Presidential Office, advisor to the Minister of National Defense on defense industry policy, and Defense Acquisition Program Administration (DAPA) international cooperation program officer.
“Trusted US-Korea defense consulting firm.”
Our VISION is to become a trusted go-to consulting firm that US and Korean companies and government entities find valuable advice and guidance from regarding US and Korea defense industrial cooperation and offset matters.