Real professionals, no egos or issues, this is a team acting together for a common goal. These guys, practice, they listen and they act professionally under the most extreme of pressures without hesitation. Checklists also play a crucial role. Watch one of the most moving human dramas of last year play out. I just found this on Barry ritholtz blog.
Full Disclosure, I am a flight geek: gliders, paraglider experience etc.