| Item | Obligations |
|---|---|
| Department of Veterans Affairs | $335M |
| Department of Homeland Security | $176M |
| Department of Justice | $154M |
| Department of the Treasury | $78.6M |
| Department of Transportation | $52.7M |
| Department of State | $31.6M |
| Department of Defense | $27.2M |
| Environmental Protection Agency | $16.1M |
| Department of Education | $12.5M |
| Department of Housing and Urban Development | $11.3M |
Department of Veterans Affairs is At and T Enterprises's largest federal customer, with $335M obligated (36.6% of the company's federal obligations).