Security guards in high-end residential areas can sleep for 3 hours at night. What can they do in their fifties?

I can't. Job requirements for security guards in high-grade residential areas: the staff is 18-45 years old, and the height is above 165. They are in good health and have no bad habits. They are mainly engaged in long-term work, and are mainly responsible for the entry and exit registration, safety inspection and various order maintenance of patrol duty personnel, without any direct physical contact. Therefore, the age of 50-year-old staff does not meet the requirements, so security guards in high-grade residential areas can work in.