| Item | Obligations |
|---|---|
| Other Support Activities for Air Transportation | $939M |
| Security Guards and Patrol Services | $507M |
| Engineering Services | $312M |
| Facilities Support Services | $236M |
| General Warehousing and Storage | $126M |
| Computer Facilities Management Services | $125M |
| Aircraft Manufacturing | $95.4M |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $83.3M |
| Ship Building and Repairing | $68.9M |
| General Automotive Repair | $49.5M |
Other Support Activities for Air Transportation is Amentum Services's largest federal market, with $939M in obligations.