Yeah he is.
He's the guy I got all my instructor certs from, and helped him to revamp Southern AZ Firearms Educators (S.A.F.E.), along with a bunch of other instructors.
FWIW, the local GOP requested that Chester NOT hold machinegun shoots for fundraisers, as that could be seen as "insensitive". He told them "It is a legal activity, being conducted by law-abiding citizens. Are you sure you're not in the wrong party?"

Jon