The following people participate in Emergency MS as representatives of Supporting Entities. (OASIS members who choose to participate as Emergency MS Observers are not named here.)
| Person | Organization |
|---|---|
| Simon Berman | AtHoc, Inc.* |
| Aviv Siegel | AtHoc, Inc.* |
| Judith Woodhall | ComCare* |
| Art Botterell | Contra Costa County Community Warning System |
| Tracy Ryan | Emergency Interoperability Consortium |
| Scott Johnson | ESI Acquisition, Inc.* |
| Werner Joerg | IEM |
| Rex Brooks* | Individual |
| David Coursey | Individual |
| Randall Shane | Knowledgeable & Innovative Technical Solutions, Inc. (KITS, Inc.) |
| Alison Keefe | Lockheed Martin* |
| Barbara Reagor | Monmouth University |
| Claudia Bitner | MyStateUSA |
| Dee Schur | OASIS * |
| Paul Thorpe | OSS Nokalva* |
| Alessandro Triglia | OSS Nokalva* |
| Himadri Banerjee | Previstar Inc. |
| David Ellis | Sandia National Laboratories |
| Sukumar Dwarkanath | SRA International |
| Chad Foster | US Department of Homeland Security* |
| Timothy Gilmore | US Department of Homeland Security* |
| James Goodson | US Department of Homeland Security* |
| Haeyoung Kim | US Department of Homeland Security* |
| Tahir Latif | US Department of Homeland Security* |
| Camille Osterloh | US Department of Homeland Security* |
| Jacqueline Postell | US Department of Homeland Security* |
| Elysa Jones | Warning Systems, Inc.* |