Separate question just making sure I understand something:
Event cubes? I thought all cubes had to go in same battleground from ops?
Every card can be played either for its "Ops" (using a Twilight Struggle term) value, which ranges from 1-3, or for the "Event" (which is the printed text on each card). An Event often lets you break the normal game rules - for example, as in the case of the OP, it lets you place a number of cubes in different Battlegrounds at once (whereas the normal rule is that you place 1-3 cubes, depending on Card strength, in a single Battleground).