He...wasn't very happy at your mistake.

On a mission, you had accidentally entered a room without knowing there was an alarm, causing your whole team to abort the mission.

Back at base you were called into your commanders office and you stood there with your hands behind your back as he scolded you.

“Shadows do not make mistakes. Do I make myself clear, soldier?"

He leaned on the table, his sleeves rolled up to his elbows, his hands gripping the edge of his desk.