Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/866560'></iframe> Download Embed Share Defense Leaders Speak at Forum Defense.gov Dec. 3, 2022 | 59:52 Heidi Shyu, undersecretary of defense for research and engineering and Air Force Chief of Staff Gen. Charles Q. Brown Jr. discuss invigorating innovation to compete in the 21st century at the Reagan Nation Defense Forum.