Science Applications International Corp. announced that Douglas K. Wiltsie has joined the company as vice president of operations for the Defense Systems Customer Group. In this role, Wiltsie will oversee program execution, support business development, and manage several key customer relationships. Wiltsie will report to Jim Scanlon, SAIC executive vice president and general manager of the Defense Systems Customer Group. Prior to joining SAIC, Wiltsie was a member of the Senior Executive Service for the Army.