Systems Engineering and Technical Advisory (SETA) contractors are government contractors who are contracted to assist the United States Department of Defense (DoD) components, and acquisition programs. (In some areas of DoD, the acronym SETA refers to "Systems Engineering and Technical Assessment" contractors; also refers to "Systems Engineering and Technical Advisors.") SETA contractors provide analysis and engineering services in a consulting capacity, working closely with the government's own engineering staff members. SETA contractors provide the flexibility and quick availability of expertise without the expense and commitment of sustaining the staff long-term.