| Item | Obligations |
|---|---|
| Department of Defense | $1B |
| National Aeronautics and Space Administration | $472M |
| Department of Homeland Security | $22.3M |
| Department of Health and Human Services | $8M |
| Department of Transportation | $1.9M |
| Department of State | $935K |
| Department of Energy | $472K |
Department of Defense is Johns Hopkins University Applied Physics Laboratory's largest federal customer, with $1B obligated (67.4% of the company's federal obligations).