The first guy they took out was Flynn, right after Flynn gave a warning to Iran.
Speaking of which, I did a search on Flynn's sentencing hearing, and the last info I found was that it was supposed to occur within the 7 business days following November 28th, 2018. Since the 29th and 30th have come and gone...that leaves only next week for his hearing. Nothing has been published about it though. I wonder if Mueller will request another delay.