As a manufacturers representative that is involved very deeply with the cross connection control industry and the proper installation and maintenance of backflow devices, I believe it is absolutely necessary that the State provide proper testing and requirements for licensing of person(s) who will be involved with the testing, certification, installation and repair of these assemblies.  These are health protecting devices and those persons who will work on them, test them, or install them need to understand the operation of these devices and assemblies and their importance to the maintenance of the safety of our potable water supply. To let any person who was so inclined, work on these units or attempt to certify them is tantamount to allowing people to own guns with inadequate background checks