| Item | Obligations |
|---|---|
| General Services Administration | $433M |
| Department of Defense | $251M |
| Department of State | $41.7M |
| Department of the Interior | $20.4M |
| Department of Commerce | $15.2M |
| Department of Homeland Security | $12.8M |
| Department of Justice | $6.8M |
| Department of Energy | $4.7M |
| Consumer Financial Protection Bureau | $3.4M |
General Services Administration is Mantech Advanced Systems International's largest federal customer, with $433M obligated (54.9% of the company's federal obligations).