Just bad luck. As time goes by, certain of your people may develop health issues as time goes by. You COULD replace him, but the time lost wouldn't be worth it. I think his loss, depending on what his bonus was, may make the survey take a BIT longer, but not by too much, unless he was one of your major survey guys. Also, since you can't form a team unless you select 5 officers, it may be that the team won't work with only 4. Can anyone clarify this?
Eric