>Is there a suggestion for reaching out to public officials?

Depends on what you're trying to accomplish. I assume you're trying to find government customers? Some agencies are far more proactive, easier to deal as it's in their mandate to help businesses. An example would be a Chamber of Commerce. Try and get someone within an agency onboard to advocate for you.

You could try finding gov employees on Linkedin as a more direct route. Another option is to try contacting your local elected officials and ask for help, that's what they are there for.

If you are having difficulty in your outreach, you can try finding ex-gov employees or service members who can help you navigate bureaucracy.