User blog comment:Dragonfly82/How come one of the most annoying characters are still alive?/@comment-4859352-20150222164029

1. They're greenhorns in comparison with Nick (Rush). He has been killed 100 times at least =)

2. Simple answer on your Q: luck.

3. Banal explanation: it's imperfection of screenplay or just screenwriters ' will. Don't be obsessed with it. Jusr enjoy the series! ;)