| Item | Obligations |
|---|---|
| Other Support Activities for Air Transportation | $1B |
| Security Guards and Patrol Services | $508M |
| Engineering Services | $425M |
| Facilities Support Services | $253M |
| Computer Facilities Management Services | $155M |
| General Warehousing and Storage | $153M |
| Aircraft Manufacturing | $121M |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $105M |
| Ship Building and Repairing | $69M |
| General Automotive Repair | $50.7M |
Other Support Activities for Air Transportation is Amentum Services's largest federal market, with $1B in obligations.