Mailbag: What is the S2? An Explanation of Staff Functions and Community Security By Mike Shelby • April 20, 2018April 24, 2018 Mike ShelbyMike Shelby is a former Intelligence NCO and contractor. He's now the CEO of Forward Observer. Get the Daily SA Get our brief on situational awareness directly to your inbox every day. First NameEmail This iframe contains the logic required to handle Ajax powered Gravity Forms.