If you haven’t taken notice (and you probably aren’t reading this if you have not) Red Hat has taken off aggressively over the last few years. Linux has so many advantages over some of the other leading operating systems. Particularly, the advantages are most prominent when it comes to security.
Because of the heightened security features and because of a few other features, many Government and Military agencies jumped on the Linux, and Red Hat ship quite early.
Red Hat training has been growing like mad in the last year or so. many companies are providing on-site classes for groups. There are also options out there where individuals can join open enrollment Red Hat classes. The leading classes right now for Red Hat include the RHCSA and the RHCSE.