2.5.1.8. Section 8: Spectrum and E3 Control Requirements. No change from a regular CDD to the Spectrum Requirements section of the IS-CDD.

For reference or comparison, below is what the JCIDS Manual says for the CDD 2021 itself:

2.5.8.1. The purpose of this section is to identify electromagnetic (EM) spectrum and control requirements and to ensure compliance with appropriate policy and guidance. This information supports compliance with System Survivability KPP and Force Protection KPP.