This isn’t classified stuff - a friend of mine actually builds these for a company that contracts with the government and wants to move up.
He wants to know if there are courses that cover requirements, specifications, regulations, etc. so he can get certified.
He’s already enrolled in a one-day at the local community college for a quickie overview, but wants something more substantial ...
Um, yes it is.
NSA has some downloadable publications on SCIF standards.