Celerium Inc., El Segundo, California, has appointed Tommy McDowell as vice president of strategy for its Cyber Defense Network solution.
Gen. James Mattis, USMC (Ret.), has joined The Cohen Group, Washington, D.C., as a senior counselor.
Cadence Aerospace, Everett, Washington, has appointed Anthony (Tony) E. Lawson as vice president and general manager of Cadence Aerospace—Giddens Industries.
Advanced Concepts and Technologies International LLC, Arlington, Virginia, has appointed Shawn J. Jenkins as senior director of human resources.
Exclusive Networks, San José, California, has appointed Vanessa Delrieu as vice president of finance and operations North America.
Dwight Campbell has joined Sentar, Huntsville, Alabama, as director of Army programs.
Sandia National Laboratories, Livermore, California, has appointed Andrew McIlroy the new associate laboratories director.
Brig. Gen. James R. Cluff, USAF, has been assigned deputy director for intelligence, surveillance and reconnaissance operations, Joint Staff, Pentagon, Washington, D.C.
Xavier Tardy has been appointed executive vice president of finance of the division and will also become a member of the divisional executive committee for Airbus Defence and Space, Munich, Germany.
Julian Whitehead has been appointed executive vice president of global business and strategic programs for Airbus Defence and Space, Munich, Germany.
Ted Tewksbury has been appointed as CEO for Eta Compute Inc., Westlake Village, California.
Crowley Maritime Corp., Jacksonville, Florida, has promoted Smijith Kunhiraman to director of technology solutions.
Michael Clauser has joined Access Partnership, Washington, D.C., as global head of data and trust.
Crowley Maritime Corp., Jacksonville, Florida, has promoted Patrick Wallace to vice president of supply chain.
Crowley Maritime Corp., Jacksonville, Florida, has promoted Chris Goss to vice president of business development.
Andy Cohen has joined Sev1Tech, Woodbridge, Virginia, as vice president of business development.