With the haphazard and continuously changing way they are rostering us, the sleep pattern disruption, and the corresponding continuous fatigue levels we are facing, it COMPLETELY baffles me why ANYONE is considering using discretion except potentially in the most extreme cases (which involve bona-fide cases of extenuating circumstances involving humanitarian aid and assistance). Haven't there been enough safety flags thrown already ? Why would anyone choose to take additional risks as well as add to cumulative fatigue when the individual has become the only real safety backstop ?