The dirty little secret of suicide: those who want to kill themselves, will.
Corollary: you honestly cannot understand the though process that brings someone to the point of straight up killing themselves as opposed to making a suicide attempt. This thought process is so completely irrational that we sit around after a friend commits suicide and we just can't understand. Unless you personally have experienced the absolute destructiveness of the suicide thought process, you can't comprehend it. The best way to describe it is that a suicidal person lacks the ability to understand, whether through anger or isolation, the effect their actions will have on the people around them.
To truly achieve resilience within the AF, we have to build lasting friendships with our fellow service and/or community members. The number one thing that stops people, aside from those who will kill themselves anyway, is that real connection with other people. No amount of training, CBTs, or resilience/wingman days can instill the type of personal relationships needed to give a suicidal person pause in their actions.