Jamal is a new york city firefighter/paraamedic. people who know him say

People who know him say that he is egosyntonic.

When it comes to egosyntonic character, it refers to people who manage to stay calm and collected in any situation. In this case, Jamal remains the same no matter what the situation may be, which is why he was given the promotion because of his level-headedness and the ability to stay cool at all times.