Derkeethus was sitting on the grindstone in the training room next to a couple of recruits who were practicing their skills on the dummies in the room. He was actually teaching one of them how to use the bow and arrow better, while simulateanously sharpening his Ebony Shortsword. The other recruit was practicing what to do in high profile combat with the guards, using his ebony daggers on a different dummy
The ebony arrow hit the wall above the dummy's head and fell to the floor. Derkeethus heard a feminine "Damn it!" in a frustrated tone. "Don't be so hasty! You're not even aiming it. I understand it is eager to slaughter, but don't release the arrow immediately when you pull the string back. Many assassins have failed to kill and been discovered releasing the arrow as fast and reckless as you do", said Derkeethus as he turned his head in her direction, while still sharpening his blade. "Take it slow, concentrate on your target, imagine that you're a hawk, and your arrow is a your talons." Derkeethus paused for a moment to make sure she was listening, then continued with,"...and imagine that your target's head is a fish in the water. The hawk doesn't instantly go for the fish does it? No, the hawk flies about the skies, waiting for an opportunity to strike the water. After the hawk is done focusing, it swoops down and pounces the fish. Thus the deed is done." The female assassin quietly nodded from underneath her mask and hood, and did as Derkeethus told her. The girl pulled back the arrow in the string and waited a good three Mississippi seconds to release it, focusing on the head of the dummy. Then released her grip on the string, the arrow flew straight at a high velocity, making a "phewwww" sound as it soared through the wind, and impaled itself into the bullseye of the dummy's head.
The girl pumped her fist in the air and said "Yes!" cheerfully when the arrow pierced through the Dummy's head. Derkeethus sprouted a little grin across the sides of his argonian face and said, "Nice job, now hand me that ebony Ingot over there..." he then pointed at the table where the ingot was lying. "....this damn sword is still duller than one of the Emperor's speeches, when he was alive of course, hehehe." Derkeethus concluded mischeviously. The girl assassin walked over to the table, grabbed the ingot then walked to Derkeethus, still sitting on the grindstone, and handed it to him. He then proceeded to grind it into his sword which made it immensely sharper.
Derkeethus then got up off of the grindstone, having finished sharpening his blade. Then suddenly, he heard voices in the other room, which sounded like Dargo and Nazir having a conversation, he couldn't understand what they were saying though, due to the distance between the rooms. Then a minute later Derkeethus heard footsteps entering the training room. Once the figure entered the room, it revealed itself to be Dargo. All of the assassins in the room stopped what they were doing, froze, and focused their attention at Dargo. "What is it, Dargo?" Derkeethus asked.
"You guys, I am going to need you all soon. You have heard of my contract yeah? The group of rebels are in a cabin south a few kilometers of the city, I want you all in the surrounding area by morning, and we will stalk them for a while. I will fill in with what to do later.", was Dargo's answer to Derkeethus' question. Derkeethus nodded and muttered "Understood, me and my group will meet you there". Then Dargo turned around, gathered a few other assassin's from the sanctuary, then left through the main entrance. Derkeethus took his two assassins and left out the back entrance, while hearing the moans and groans of the Dark Brotherhood's torture victims as they sprinted by.