No, not a Hollywood millionaire.
This guy was a UK policeman caught up in the 1980 Iranian Embassy siege and kept captive for a week, during which time he refrained from going to the bathroom because that would have revealed that he was an armed member of the Diplomatic Protection Team.
When the SAS stormed the embassy he saved the life of one of those SAS men. He was awarded the George Cross, the highest award possible for people not in the military.
The thought of 'What's in it for me' never crossed his mind.

https://www.bbc.co.uk/news/articles/c8x8ewgwzqqo
This guy was a UK policeman caught up in the 1980 Iranian Embassy siege and kept captive for a week, during which time he refrained from going to the bathroom because that would have revealed that he was an armed member of the Diplomatic Protection Team.
When the SAS stormed the embassy he saved the life of one of those SAS men. He was awarded the George Cross, the highest award possible for people not in the military.
The thought of 'What's in it for me' never crossed his mind.

https://www.bbc.co.uk/news/articles/c8x8ewgwzqqo