| Item | Obligations |
|---|---|
| General Services Administration | $425M |
| Department of Defense | $243M |
| Department of the Interior | $20.4M |
| Department of State | $17.9M |
| Department of Commerce | $15.2M |
| Department of Homeland Security | $12.9M |
| 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 $425M obligated (56.7% of the company's federal obligations).