Asking for "comments" to an email may not end so well for them, especially when it comes to "strengthening [...] warfighting capabilities".

Seems like they might be trying to spin this "Challenge" as a sort of AES-style competition, but merely requesting comments en masse seems like it will go the way of the Net Neutrality comments on the FCC site - lots of spam drowning out legitimate input, leading to powerful entities feeling justified in ignoring all submissions.