One possible scenario could be that Jason is in a state of shock. He might be thinking about how this injury could affect his role in the mission. He could be worried about letting his friends down, especially since he's always seen as a strong leader. 'I can't believe this happened. How will I be able to fight like this?' he might be thinking as he looks at his injury.
It depends. Sometimes names like Jason are used in fictional stories, but it could also be based on a real person or event. Without more context, it's hard to say for sure.
Most often, Jason is a figment of the imagination in fictional works. There's no concrete evidence to suggest it's based on a true story. It's more about creative storytelling and fantasy.