Distracting defenders while a FT or Mammoth rush comes blazing into their bases.

"OH LOOK, EASY TARGETS!"

*BRRRRRRRRRRRM*

"GDI/NOD WEAPONS FACTORY DESTROYED...GDI/NOD TIBERIUM REFINERY DESTROYED"

Quite frankly, I think people are overlooking the power of the Chinook (which looks more like a CH-46E Sea Knight) - but since it doesn't have the ability to, how would the n00bs put it, "make things go boom and fall down and go boink," very rarely do I see someone buy one - probably because the general school of thought is that you have to go to the maximum crusing altitude so you REALLY die when you fall.