| KCKansas City Intl Airport Maintenance Bas-mci Maintenance and Engineering Base | Kansas City | MO | — | ◇ UNVERIFIED |
| KDKellstrom Defense Aerospace INC | Miramar | FL | — | ◇ UNVERIFIED |
 Kratos Unmanned Aerial Systems, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| LCL3 Communication | Ayer, Town of | MA | — | ◇ UNVERIFIED |
| LCL-3 Communications Integrated Systems LP | Waco | TX | — | ◇ UNVERIFIED |
| LLLas Labs INC | Las Vegas | NV | — | ◇ UNVERIFIED |
| LALmi Aerospace Cottonwood Falls, Ks | Cottonwood Falls | KS | — | ◇ UNVERIFIED |
| LALockheed Aeronautical Sys CO | Burbank | CA | — | ◇ UNVERIFIED |
| LALockheed Aeroparts INC | Johnstown | PA | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautics | Pinellas Park | FL | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautics CO. | Clarksburg | WV | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautics Palmdale Site 7 | Palmdale | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeroparts INC | Johnstown | PA | — | ◇ UNVERIFIED |
| LMLockheed Martin CORP | Burbank | CA | — | ◇ UNVERIFIED |
| LMLockheed Martin Sikorsky Commercial INC | Coatesville | PA | — | ◇ UNVERIFIED |
| LTLufthansa Technik Puerto Rico LLC | Aguadilla | PR | — | ◇ UNVERIFIED |
| MIMalabar International | Simi Valley | CA | — | ◇ UNVERIFIED |
| MHMars Hill Properties 50th LLC | Seattle | WA | — | ◇ UNVERIFIED |
 Matrix Composites INC | Rockledge | FL | — | ◇ UNVERIFIED |
| MAMaule Air INC | Moultrie | GA | — | ◇ UNVERIFIED |
| MPMccauley Propeller Systems, INC | Vandalia | OH | — | ◇ UNVERIFIED |
| MTMccay Tool & Engineering Company | Fenton | MO | — | ◇ UNVERIFIED |
| MDMcdonnell Douglas Aerospace - a Subsidiary of Boeing | Huntington Beach | CA | — | ◇ UNVERIFIED |
| MDMcdonnell Douglas Astronautics CO | Pueblo | CO | — | ◇ UNVERIFIED |
| MDMcdonnell Douglas CORP Air Force Plant 85 | Columbus | OH | — | ◇ UNVERIFIED |
| MDMcdonnell Douglas Tulsa | Tulsa | OK | — | ◇ UNVERIFIED |
| MSMessier Service America INC | Sterling | VA | — | ◇ UNVERIFIED |
| MRMhi Rj Aviation INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| MIMoog INC. | Orlando | FL | — | ◇ UNVERIFIED |
| NKNas Keywest Fleet Readiness Center Se | Key West | FL | — | ◇ UNVERIFIED |
| NDNc Dynamics LLC | Long Beach | CA | — | ◇ UNVERIFIED |
| NONew Orleans International Airp | Kenner | LA | — | ◇ UNVERIFIED |
| NRNordam Repair Division | Tulsa | OK | — | ◇ UNVERIFIED |
| NBNorth Boeing Field Georgetown Steamplant | Seattle | WA | — | ◇ UNVERIFIED |
| NCNorthrop Corporation | Pico Rivera | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Air Force Plant 42 Site 8 | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP | Lake Charles | LA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP. Aircraft Div | El Segundo | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Corporation | Moss Point | MS | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Defense Systems | Middle River | MD | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Newbury Park | Newbury Park | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman, Palmdale B500 | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Bethpage | NY | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Melbourne | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Asbu Clearfield H5 | Clearfield | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Clearfield, G13 | Clearfield | UT | — | ◇ UNVERIFIED |
| NGNuttall Gear | Niagara Falls | NY | — | ◇ UNVERIFIED |
| NLNwi-wichita LLC | Wichita | KS | — | ◇ UNVERIFIED |
| NDNys Dmna - Fms #11 | Rochester | NY | — | ◇ UNVERIFIED |
| OIOmada International Sumner Division | Sumner | WA | — | ◇ UNVERIFIED |
