Boone unsuccessfully tries to perform CPR on an unconscious Rose Henderson , which he claims to have learned from when he was a lifeguard .
Jack Shephard convinces lifeguard to retrieve a pen , unnecessarily .
Boone unsuccessfully tries to perform CPR on an unconscious Rose Henderson , which he claims to have learned from when he was a lifeguard , but Jack Shephard convinces him to retrieve a pen , unnecessarily .