Contrary to wars, rescue is humanity!
Rescue saves life, the core of humanity. Saving lives defines what humanity exactly is although saving lives is just one of the many aspects of humanity.
Rescue is also helping people to stay alive, so it is humanity for that sense.
Rescue has a rich taste of humanity because it is the humanity of people saving and helping people. During rescue, the rescuers could be putting themself in danger or even sacrificing their own lives saving and helping others to stay alive.
The action of rescue manifest humanity while the rescuers are the meanings of humanity.