Applying U.S. Law to answer the following questions. Would your answers be different if Vietnamese Laws apply?

1. Stan returns home from work to discover his house surrounded by police. His wife is being held hostage and threatened by her captor. Stan pleads with the police to rescue her and offers $5000 to the policeman who brings her uninjured to safety. A police officer, Peter, eventually talks the captor into releasing the woman hostage and he leads the woman to safety. When Peter goes to collect his $5000, Stan says, \"Thank you very much, but I have no intention of paying.\" Would Peter succeed in a court action against Stan