Didn't the great emperor see everything? 
Oh I do. But I have to give you all an illusion of being usefull.
By pretending to need your services, I grant you the opportunity to earn glory and favor.
NOTE TO SELF: Install more CCTV cammeras.
ADDENDUM: put netherrack all over the great wall.
ADDENDUM2: rapid-fire fire arrow launchers for the titans guns. Hmmm...if I put a mob spawner inside the gun I could launch creepers! Get a research team on that ASAP.
ADDENDUM3: Don't make mental notes to self while speaking to the public. Also, call in MIB units to "fix" this.
*FLASH*
It was just swamp gas.