| Phoenix Engineering Technical Services LLC | Gilbert | AZ | Subcontractor |
| Phoenix Noise & Vibration LLC | Frederick | MD | $0 |
| Phoenix Sage LLC | Springfield | OH | Subcontractor |
| Piercon Solutions, L.L.C. | Butler | NJ | $0 |
| Pinnacle Consulting Group, Inc. | Chagrin Falls | OH | Subcontractor |
| Pinnacle Engineering Inc. | Hoover | AL | $0 |
| Pin Oak Engineering PLLC | Paducah | KY | Subcontractor |
| Pi-tech, Inc. | Macon | GA | Subcontractor |
| Pivotpoint Technology Corp. | Fallbrook | CA | Subcontractor |
| PKC Corp. | Perry | GA | $0 |
| Plant Engineering Consultants, Inc. | Colorado Springs | CO | $0 |
| P-laser Midwest USA, LLC | New Haven | MO | $0 |
| Plump Engineering, Inc. | Anaheim | CA | Subcontractor |
| PND Engineers Inc. | Seattle | WA | Subcontractor |
| PNT, LLC | East Greenwich | RI | Subcontractor |
| Polysonics Acquiring Corp. | Warrenton | VA | Subcontractor |
| Pond & Company | Jacksonville | FL | Subcontractor |
| Porter Technical, Inc. | Lexington Park | MD | Subcontractor |
| Poster West LLC | Weatherford | TX | Subcontractor |
| Potential Power, Inc. | Glendale | CA | Subcontractor |
| Potesta & Associates, Inc. | Charleston | WV | Subcontractor |
| Potomac Training Corporation | Sarasota | FL | $0 |
| Powell & Hinkle Engineering P.a. | Orange Park | FL | Subcontractor |
| Power & Control Engineering Solutions, LLC | Tulsa | OK | Subcontractor |
| Power Research And Developement Consultants Private Limited | Bangalore | | Subcontractor |
| Powers Engineering And Inspection Incorporated | American Canyon | CA | Subcontractor |
| Power Systems Professionals Inc. | Mcclellan | CA | $0 |
| Power Testing & Energization Inc. | Hailey | ID | Subcontractor |
| Powertrain Engineers, Inc. | Hartland | WI | Subcontractor |
| Powtec Services, LLC | Bremerton | WA | Subcontractor |
| Practical Innovations International, Inc. | Woodbridge | VA | Subcontractor |
| Praemittias Group, Inc. | Littleton | CO | Subcontractor |
| Praetorium Technica LLC | Huntsville | AL | Subcontractor |
| Prairie Engineering PC | Minot | ND | $0 |
| Pratt & Whitney Puerto Rico, Inc. | Aguadilla | PR | Subcontractor |
| Precept Compliance LLC | Bend | OR | Subcontractor |
| Precise Systems, Inc. | Odon | IN | Subcontractor |
| Precision Systems Engineering Inc. | Sandy | UT | Subcontractor |
| Precision Systems Inc. | Washington | DC | Subcontractor |
| Predicate Logic Inc. | Chesapeake | VA | $0 |
| Premier Automation LLC | Monroeville | PA | Subcontractor |
| Premier Engineering Consultants LLC | Kansas City | MO | $0 |
| Premier Engineering Corp. | Chandler | AZ | $0 |
| Premier Engineering Group, Inc. | Rockaway | NJ | $0 |
| Preon Enterprises Inc. | Waldorf | MD | Subcontractor |
| Preston L. Shepherd & Associates, Inc. | Yakima | WA | $0 |
| Previdi, Edward | Guaynabo | PR | $0 |
| Primaira LLC | Woburn | MA | Subcontractor |
| Primate Technologies, LLC | Melbourne | FL | Subcontractor |
| Prime Ae Group, Inc. | Pensacola | FL | Subcontractor |
| Prime Consulting Solutions LLC | Athens | AL | Subcontractor |
| Prime Engineering Incorporated | Atlanta | GA | $0 |
| Primera Engineers Ltd. | Chicago | IL | $0 |
| Principled Safety LLC | Knoxville | TN | Subcontractor |
| Prindiville Digital Radiography Consulting, LLC | Lincoln | CA | $0 |
| Pristine Spectrum Solutions LLC | Livermore | CA | Subcontractor |
| Pritchard Engineering, Inc. | Columbus | MS | Subcontractor |
| Proceanic, Ltd. | Houston | TX | $0 |
| Process Engineering Associates LLC | Oak Ridge | TN | Subcontractor |
| Process Improvement Institute, Inc. | Knoxville | TN | $0 |
| Productive Energy Solutions LLC | Madison | WI | $0 |
| Proe Power Systems, LLC | Medina | OH | Subcontractor |
| Professional Engineering Associates, Inc. | Auburn Hills | MI | Subcontractor |
| Professional Engineering Consultants Pa | Wichita | KS | Subcontractor |
| Professional Engineering Consultants, P.a. | Kansas City | MO | Subcontractor |
| Professional Engineering Services, Ltd. | Eagan | MN | Subcontractor |
| Professional Systems Engineering LLC | Lansdale | PA | $0 |
| Progress Analytics LLC | Blacksburg | VA | Subcontractor |
| Project Controls Group, Inc. | Saint Louis | MO | $0 |
| Projyct LLC | Virginia Beach | VA | Subcontractor |
| Prolan Solutions LLC | Enola | PA | Subcontractor |
| Pro-plus Engineering, PLLC | Morgantown | WV | $0 |
| P&ro Solutions Group, Inc. | Newtown Square | PA | Subcontractor |
| Proteus Technologies LLC | Slidell | LA | Subcontractor |
| Protex The Pt Xperts LLC | Phoenix | AZ | $0 |
| Protobox LLC | Dayton | OH | Subcontractor |
| Prots John | Centreville | VA | Subcontractor |
| Provost & Pritchard Engineering Group, Inc. | Clovis | CA | Subcontractor |
| Proxops LLC | Houston | TX | Subcontractor |
| PS2 LLC | Waretown | NJ | Subcontractor |
| Psci Engineers PLLC | Pembroke | NC | Subcontractor |
| P & S Consultants, LLC | Guaynabo | PR | $0 |
| Psi, LLC | Colorado Springs | CO | $0 |
| PsomasLos Angeles, CA · UEI D2CJY3JLPSC5 | Los Angeles | CA | Subcontractor |
| PsomasRoseville, CA · UEI KK2UWMKQMCB3 | Roseville | CA | Subcontractor |
| PTR Automation, Inc. | Panama City | FL | Subcontractor |
| PTX LLC | Rockville | MD | Subcontractor |
| Pudar Mitigation Consulting Inc. | Marietta | GA | Subcontractor |
| Pugh Associates Of Florida, LLC | Saint Petersburg | FL | Subcontractor |
| Pulsco, Inc. | Santa Ana | CA | Subcontractor |
| Purcell Electrical Professional Corp. | Reno | NV | $0 |
| Pure Engineering LLC | Santa Barbara | CA | Subcontractor |
| Purple Urchin Inc. | Manassas | VA | Subcontractor |
| Qcorp | Colorado Springs | CO | Subcontractor |
| Qc Southwest, Inc. | Escondido | CA | Subcontractor |
| Q Engineers, Inc. | Anchorage | AK | Subcontractor |
| Qinetiq Group Canada Inc. | Medicine Hat | AB | Subcontractor |
| Qos Networks LLC | Vail | AZ | Subcontractor |
| Q Solutions, Inc. | Tucker | GA | Subcontractor |
| QTS Rei JV, LLC | Houston | TX | Subcontractor |
