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/815934'></iframe> Download Embed Share Defense Leaders Hold Briefing Defense.gov Sept. 30, 2021 | 52:44 Pentagon Press Secretary John F. Kirby and Air Force Gen. Glen D. VanHerck, commander of North American Aerospace Defense Command and U.S. Northern Command, brief the media at the Pentagon.