| # | Company name | Role | # of projects |
|---|---|---|---|
| 41 | AFA Protective Systems | Fire protection engineering | 0 |
| 42 | AFA Protective Systems | Fire protection engineering | 0 |
| 43 | AFA Protective Systems | Fire protection engineering | 0 |
| 44 | AFA Protective Systems | Fire protection engineering | 0 |
| 45 | AFA Protective Systems | Fire protection engineering | 0 |
| 46 | AFA Protective Systems | Fire protection engineering | 0 |
| 47 | AFA Protective Systems | Fire protection engineering | 0 |
| 48 | AFA Protective Systems | Fire protection engineering | 0 |
| 49 | AFA Protective Systems | Fire protection engineering | 0 |
| 50 | AFA Protective Systems | Fire protection engineering | 0 |
| 51 | AFA Protective Systems | Fire protection engineering | 0 |
| 52 | AFA Protective Systems | Fire protection engineering | 0 |
| 53 | AFA Southeast | Fire protection engineering | 0 |
| 54 | AFA Southeast | Fire protection engineering | 0 |
| 55 | AFA Southeast | Fire protection engineering | 0 |
| 56 | AFA Southeast | Fire protection engineering | 0 |
| 57 | AFEC Ahearne Fire Engineering Consultants | Fire protection engineering | 1 |
| 58 | AGF Manufacturing, Inc. | Fire protection engineering | 1 |
| 59 | Ahern Fire Protection | Fire protection engineering | 1 |
| 60 | Ahern Fire Protection | Fire protection engineering | 0 |