| Item | Obligations |
|---|---|
| Wired Telecommunications Carriers | $161M |
| Engineering Services | $109M |
| Security Systems Services (except Locksmiths) | $93.6M |
| Computer Systems Design Services | $28.2M |
| Facilities Support Services | $22.8M |
| Electrical Contractors and Other Wiring Installation Contractors | $13.5M |
| Other Computer Related Services | $8.9M |
| All Other Miscellaneous Electrical Equipment and Component Manufacturing | $5.3M |
| Software Publishers | $2.3M |
| Architectural Services | $2M |
Wired Telecommunications Carriers is M C Dean's largest federal market, with $161M in obligations.