Summary Veteran's preference does not apply to DHA recruitment. Click on "Learn more about this agency" button below for more information. The primary purpose of this position is to serve as a ground and/or airborne test engineer. Learn more about this agency Duties Help serves as a ground and/or airborne test engineer. As a test engineer the major responsibilities include test planning, conduct and reporting on various types of ground air-to-air and/or air-to-ground test programs. Plans