My first supervisor went OSI. As did one of my captains.
Sup was a "Golden Boy" (Untouchable with his record) in the unit. Had done everything a cop could do in six years, made staff first time out, below the zone for senior airman, spoke another language, had QC'd for like five different jobs and worked IN the QC office, been coined half a dozen times, had a degree, etc etc etc.
Captain was pretty close up there in similar achievements. They pick who THEY want (and then, assume you pass the school).
"And Shepherds we shall be. For thee, my Lord for thee. Power hath descended forth from thy hand, that our feet may swiftly carry out thy command. So we shall flow a river forth to thee and teeming with souls shall it ever be. In nomine Patris, et fili, et Spiritus Sancti. Amen."