Supply Drops

So, does anyone have a clue how to exactly get them? It seems like they're pretty random, even unlocking challenges etc did not give me one.

Would it also be possible to "unlock" them via CE or other methods?


edit: Ehhhh, somehow went from Discussion into Coding/Resources - sooooooorry!

I think you get them randomly when you level up. At least that's how I've got all of mine so far.