Stop the Siege (Alliance)

Objectives
Senior Demolitionist Legoso in Wintergrasp Fortress wants you to destroy 3 Horde siege machines.
 * Horde Siege Devices destroyed (3)

Description
It is only a matter of time before this castle is besieged by the forces of the Horde. Destroy three of their siege devices and return here.

say

Progress
There is no time to waste, have you destroyed their siege vehicles?

Completion
Excellent. That should slow down their assault.