Use this appendix to determine the Electromagnetic Spectrum (EMS) Survivability Risk Category and describe it IAW Annex C to Appendix G of this enclosure and the EMS Survivability Guidebook which can be found on KM/DS,

- EMS Survivability ensures warfighter systems are designed to prevent, mitigate, and recover from operations in congested and contested EMS environments.
- Applies to all systems that incorporate electrical or electronic components that might be susceptible to electromagnetic effects. However, not all EMS survivability attributes will apply to all systems.
- There are five EMS survivability attributes:
- Spectrum Protection
- System Adaptability
- Spectrum Access Flexibility
- Spectrum Efficiency, and
- Multi-Functionality
- All systems that are vulnerable to adversarial employment of the EMS) must comply with the Spectrum Protection attribute requirements, while only Spectrum Dependent Systems (SDS) (defined for this purpose as those that operate in the radio frequency (RF) portion of the spectrum) must comply with all five of these attributes.

For more information pertaining to EMS Survivability, threat methodology, EMS Survivability Risk Category, Example language, and applicable SSAs, see the EMS Survivability Guidebook (posted to KM/DS).

- The EMS Survivability Guidebook provides extensive examples of technologies, components and features that help make a system more survivable against EMS threats. It also provides a methodology to assess risk, sample requirements statements, sample performance criteria and compliance tips.