Ling is very knowledgeable in first aid and CPR and taught our company a lot. I am confident that all of our construction crew members will be able to do what is necessary in case of an emergency where one of them isn't breathing. Being able to save a life is one of the most necessary, valuable things we, as individuals, can offer to another human being. I hope our guys won't have to use the skills they learned today, but in the event they do, they'll be as nest prepared they can be.