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/790750'></iframe> Download Embed Share DOD Officials Discuss Cybersecurity at Senate Hearing Defense.gov April 14, 2021 | 56:02 A Senate Armed Services Cybersecurity subcommittee holds a hearing on future cybersecurity architectures in Washington, April 14, 2021. Testifying are: David McKeown, Defense Department senior information security officer and deputy chief information officer for cybersecurity; Robert Joyce, National Security Agency director of cybersecurity; and Navy Rear Adm. William Chase III, senior military advisor for cyber policy to the undersecretary of defense for policy and deputy principal cyber advisor to the secretary of defense.