How do I find a Master or Senior level evaluator

How do I find a Master and Senior level Communications/ES/Safety etc evaluator. I am stuck in my unit, we simply don't have the people to sign me off and help me advance.

Do you have recommendations for an existing feature, or is this a feature that could be added to help us with our professional development as opposed to constantly bothering wing to find a trainer/tester?

Because levels do not expire like the ones in Operations Qualifications someone could be a master level Safety, but not have worked in Safety for 10 or more years. The best place to find someone to sign off is up the chain -- either Group or Wing -- they would have the best suggestion for a trainer/evaluator.