For our Men and Women in the Armed Forces in any branch of the US Military's premier school for leadership and combat expertise. The Intercontinental Combatives Academy or (ITC).
Initially, candidates train for more than 20 hours per day, leading small combat teams through hostile terrain with little sleep or food. Trainees who do well are awarded an internal designation of N1 and are invited to return. N2 through N6 - includes instruction in zero-G combat, military free-fall (parachuting), advanced combat diving, combat instruction, linguistics, and frontline trauma care.
N7 is awarded if he/she survives combat scenarios in "admirable and heroic fashion".
The universal prestige of merely attending the academy helps to restrain trainees from taking excessive risks.