Sid. I understand how you are feeling. It's close to home for you. I have spent a fair amount of time on shift at the ASU and it can get claustrophobic when there is only one pilot. On the NS there are lots of us to water down the intensity of situations and it is easier to get on with it.
I think it is clear we will not really know what happened until the first report is released. No one seems to really know anything.
In the meantime it's best we just concentrate on our own jobs in hand. Be a little more diligent, and rest assured that what has happened is not the first time, and sadly it will not be the last...no matter how hard we all try.
Take some time out Sid and stay safe!!
Best Regards DB