“Galloping advances in technology mean important changes in the work we do to keep the United States secure not just through air, land and sea but also space and cyberspace.”

American retired army general and defense official

Lloyd James Austin III is a retired United States Army general and American defense official. He served as the 28th United States secretary of defense from 2021 to 2025 in the Biden administration. Austin spent much of his career in the U.S. Army before taking on one of the country’s highest civilian defense posts. He is known for leading the Pentagon during a period of major national security challenges and for public remarks shaped by military service, defense policy, and the responsibilities of command.