Some of my clan members told me about a loophole in the game that they discovered. If you get a KS reward a 2nd time, it overwrites the previous 1 if the previous 1 has not been used yet (for example, you get a UAV, then a UAV again). However, if you set up 2 classes with the **** strike package using the exact same setup, you can stack them by switching classes before the KS loops back to the 1st. This trick, however, only seems to work with the **** strike package as far as I'm aware.
Here's how to make it rain:
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