| Item | Obligations |
|---|---|
| Wired Telecommunications Carriers | $161M |
| Engineering Services | $94.1M |
| Security Systems Services (except Locksmiths) | $82.4M |
| Computer Systems Design Services | $23.5M |
| Facilities Support Services | $21.8M |
| Electrical Contractors and Other Wiring Installation Contractors | $10.8M |
| All Other Miscellaneous Electrical Equipment and Component Manufacturing | $3.7M |
| Software Publishers | $2.3M |
| Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | $868K |
| Other Communications Equipment Manufacturing | $552K |
Wired Telecommunications Carriers is M C Dean's largest federal market, with $161M in obligations.