[2020] Change the text to “obtain a tank 3 times” open airdrops with a tank doesn’t even make sense.

Heya, thanks for pointing this out. It is indeed a bit odd. Thanks technically drop via Airdrops, but it doesn't call out that you have to be the first to it and first to use it. We are looking into some options for changing this or at least changing adjusting the copy/text for future versions of the same type of task.