ManTech announced the appointment of Mark Bortfeld as Senior Vice President of the Navy Segment, reporting to David Hathaway, Executive Vice President and General Manager of the company's Defense Sector. Bortfeld joins ManTech from Peraton, where he served as Vice President and General Manager of Navy and Marine Corps Programs from 2020, overseeing capabilities across the mission spectrum of mission systems, applications, unmanned solutions and services. Prior to Peraton, he held senior executive positions at Perspecta, Hewlett-Packard, and Electronic Data Systems. Bortfeld's appointment is effective today, following the retirement of Navy Segment Senior Vice President Red Hoover.