I’m assuming that we don’t already know when the Dirty Bombings happened, so here’s this.
In the attacker’s first objective spawn on Vault there’s a poster in the subway tunnel entrance that looks like this:
Now, I’m not saying that the Dirty Bombings happened on September 12th, 2018. but we know that it had to have happened at least after then, since the last Service Update in this subway was in September.
I could be wrong, maybe the date of the bombings was already announced and I just didn’t know, but hey… here’s this. Hell, this could be old news to most, since Vault came out a year ago, but I haven’t seen anything on it so… yeah!