Eric stood up, he took a deep breath, he looked at Sasha, then at the gun. He took it, holding it, he took a couple of deep breaths, then walked next to the man, he cocked the gun and held it to the man's Head.
You say he is a Civilian Pilot that "Stumbled upon the Trotsky". If he has achieved that without prior knowledge of this area, he must have atleast some skill in Navigation and Piloting. A man with such skill could be useful to the Revolution. This man can be interviewed and interrogated for his allegiance and his work, where he is from , what he does and how he found the Trotsky. After that is done ,his fate can be decided. I cannot in good conscience kill this man without Interrogating him and learning more of his intentions.
Eric lifted the gun and flipped it in his hand, he offered the gun to Sasha by the Butt, if his doing was wrong , she had the oppertunity right there to shoot him, he held the gun there, waiting for her action.