Warden uniform?

[Old Man]

Thanks for all for your help. Sorry for not being specific that my question pertains to the prison camp rescue. However, it seems I have a different problem than I originally thought I had.

If I am understanding correctly, I have the proper uniform (gray/light-blue with dark-colored stripe around the middle). My problem seems to be that I am trying to rescue the wrong person.

When I first went to the hospital and looked in the window at the patients lying on the beds, the mission objective screen indicated that I had located the informant. I therefore assumed it was my job to rescue one of those patients. However, when I approach either patient in the room, I only have the option of stunning them. I actually stunned both of them and carried them to the safe area outside the compound which did not end the mission.

Who is the informant that must be rescued and where is he located?