You know what was A.W.O.L. in last night's episode? Damien Darhk. He's being true to his promise and he's out of town at the moment, leave a message after the beep please *beep* well, no message.
The episode started with Lyla and Diggle having a lovely walk before Alan Chang rained on their parade (ARGUS business). I guess you can leave ARGUS but ARGUS will never leave you. There were a number of other Lyla/Diggle moments. The Diggle brothers were also shown in flashbacks back in Afghanistan were they first met Lieutenant Joyner, the leader of the Shadowspire team (like H.I.V.E. isn't enough to deal with).