Lydia’s voice spoke in his ear, making him jump. “Have you done it yet?”

“In a minute,” he replied distractedly. The gun was in his hand, but he hesitated. He had killed many times in the heat of battle, but never like this. To kill a sleeping old man – An old man who could destroy Caledonia and kill us all, he reminded himself. It had to be done. A single green light blinked on Duncan’s headset like a watching eye. It unnerved him. Feeling foolish, he covered the light with one hand and raised the gun with the other.

Macbeth. In SPAAACE.