Projectile shooting downward

I almost have an "air strike" sort of function in my game but I still need to get the projectile to shoot downward from above the "signal" object.

The way I have it is the AirStrikes projectile oncolition created a signal object witch then creates a projectile.

I want it so that the projectile will shoot from above the object and state down. So that it will hit a roof if the airstrike was directed inside a building.