Don Posas is a highly experienced cybersecurity professional currently serving as a Senior Cyber Security Engineer at Arcfield since February 2023. Prior to this role, Don worked as a Senior Information System Security Officer at the Air Force Intelligence, Surveillance and Reconnaissance Agency from February 2021 to February 2023, where oversight of eight junior officers was maintained, and responsibility for the security posture of a $400 million ISR enterprise was undertaken. Don's previous tenure at the United States Air Force (October 2008 - February 2021) included roles as Production Manager, leading a client support team for 400 intelligence analysts, Senior System Administrator, and Vulnerability Management Supervisor, where critical systems support and vulnerability management across multiple networks were effectively executed.