I am truly honored. I hope every blood donation I gave was able to help save a life. I always wonder about how the recipients are doing, and what circumstances led them to need a life saving blood transfusion. The blood bank keeps all of that private for security reasons, of course, along with the name of the donors who donate. I just hope it all helped.
No, there have been several cases in America where cadaver dogs have been used in rural areas to find dead bodies. They use them all the time to solve cold cases, and to locate bodies when a suspect finally confesses and says where the victim is buried.