Regarding #1. Will there be performance implications when adding the secure layer? Will there be cost implications when adding a secure layer? Will the secure

Regarding #1. Will there be performance implications when adding the secure layer? Will there be cost implications when adding a secure layer? Will the secure layer add risks to the project? Governments are already bad at delivering defence projects on time, will the extra complexity make it worse? How do we know which layers are insecure? Will there be a published list of vulnerabilities that need to be mitigated by the military?