That's the biggest load of crap I've ever heard! So BOTH crew omitted to crosscheck arming/disarming?
Toluene Diisocyanate...
So what's your excuse for omissions on the flight deck with 3 tech crew supposedly checking each other....
Fatigue is an issue with any crew tech or cabin.....and no it's not fiction...
Do you think doors slides are fired off on purpose???
Twiggs....Give it a rest