Black Tusk invaded missions I hadn't played the normal versions of yet?
I just finished Tidal Basin for the first time last night, but logged out before playing the newly-unlocked missions at Coney Island, The Pentagon, and etc. Today I logged on and noticed I had an objective marker telling me to talk to Manny, and when I did he said something about how the Black Tusk had shown up again, then the game opened up the map and showed me that Manning National Zoo and Camp White Oak had been invaded, along with a few other missions in DC.
Apparently this is part of some sort of weekly invasion system, but I haven't yet played National Zoo or White Oak's normal story missions. Will I be able to play them once I get rid of the invasion/will they become available again once the week is over, or did I just get screwed out of experiencing a chunk of the story?