Hello, I apologize ahead of time if I am doing this in the wrong place but I don't know much about EMS equipment and I am looking for a little advise. My son is in school now and wants desperately to become a 1st responder and I am looking for some advise on a possible gift for Christmas. He loves rock climbing and he wants to one day be a rescue helicopter pilot (or on a team) that works the national parks & forests. He said that he wants some new equipment so I am looking into ropes and safety harness and connectors. I found a deal on the Buckingham "Ox Block" and wanted to know if this is something that is regularly used or if anyone uses them and could give me a review. If I am posting this in the wrong place, please let me know! Thanks ahead of time.