1 sweep later
The aircraft landed. It was rather warm and the wind was blowing. Trolls in suits lined up and exited the aircraft and onto the landing pad. They all carried suitcases and whatnot. They funneled into a building that was surrounded by hundreds of imperial guardsmen. The elevator button was pushed and it bought them to the 13th floor, which harbored one room. In this room was one long table with many seats. They all sat. It was quiet for quite a while, and then one spoke. "Regarding the situation in the north. Have we found this mysterious vigilante yet?" All of them shook their heads in disappointment. The same man spoke again. "You realize that if the murders continue then we will take increasingly drastic action." Everyone robotically shook their head in agreement. He stood up. "We scramble the drones in about 48 hours. Here in my hand is the authorization form for the attack. This runs through the condesce's fingers, and we're in the green. Is that clear?" Everyone shook their head in agreement, and then another stood up and spoke. "That's strange... I was given an authorization form as well."
"That cannot be right. Give it to me so I can verify its authenticity."
The second one opened his suitcase and fiddled with his papers for a while. He then stopped and grabbed something from the case. "Oh, yes. Here it is." He then stopped everything. The supposed leader of the bunch held out his hand. "You going to give it to me or not?"
"Well... if you insist."
The second troll pulled knives from the suitcase and threw them into the leader, killing him. The rest of them stood up and one managed to raise an alarm. But that was all they were able to do before they had gotten their very own sets of knives. The assassin took a hat from inside his case and put it on, walked back into the elevator, pushed the button, and descended. When the doors opened, he was met by hundreds of imperial guardsmen. He stood there. One of them gestured for him to move out of the way, to which he promptly did so. He walked through the guardsmen running into the elevator and back into the aircraft. The pilot looked at him curiously. "What the hell is going on in there?" The assassin responded. "One of them sneezed and now all of the guardsmen are running in there with their individual handkerchiefs. Now I'm going to need you to take off."
"Why?"
The assassin killed the pilot after his inquiry statement. "Because that's what happens if you don't."
The assassin took off his hat and started the engine. He carved a symbol on the pilot's body, and threw him onto the landing pad before leaving. The sun rises and the aircraft takes off.