AHHH HA HA HA HA!!!!
I can't tell you how fun researching the middle strike was, the one that just aniihilates everything on the ground for like 7 seconds. Just enough choppers to kill air and that at their spawn point over and over again (because preparing a new strike takes less time than the actual strike itself) you can just basicly prevent any ground units from going more than 3 feet past where they start. It was fun until i discovered that, then it was a blast!!!