Anon, I think this could be an ammo dead drop for ff events. You might consider adding to your png.
http:// breaking911. com/dozens-grenades-nine-live-found-maryland-road/
If all of this is 'happening', meaning attacks on the Republicans, grenade dead drops, etc - the Q team is doing a fantastic job in shutting them down & minimizing the events.
>Grenade Walking
I think they were known and the dead drop intercepted. Q Team at work - same with the train IMO