Define who is part of the Fix Team

Signed-off-by: Juraci Paixão Kröhling <[email protected]>

content/en/docs/security/security-response.md

@@ -65,7 +65,16 @@ unlikely to make a public disclosure less damaging.
 
 ### Fix Team Organization
 
-The Fix Team is made up of the relevant repository maintainers.
+The Fix Team is made up of people with the following roles:
+
+1. Incident commander, the person who will manage the communication around the
+   incident.
+2. Incident investigator(s), typically one or more maintainers of the affected
+   repositories.
+3. Subject matter experts, typically includes the reporter and other
+   contributors, such as the code owners for the affected components, or
+   repository approvers who'll provide prompt code reviews for the proposed
+   fixes.
 
 ### TC Role