Not fanfiction, but an excerpt from David Hitt, Owen Garriott and Joe Kerwin's Homesteading Space: The Skylab Story:
Quote:In another memorable incident during the medical training, [Robert] Crippen broke his hand learning CPR. During training at Sheppard Air Force Base in Wichita Falls, Texas, the SMEAT [Skylab Medical Experiment Altitude Test] crewmembers were taught CPR techniques with a "Resuscitation Annie" training dummy. "Back in those days, they always had you whack the person on the chest before you started," Crippen said. "So I whacked the dummy." When he did, the trainers told him he needed to hit the patient much harder than than. "And I did, and I broke my fifth metacarpal! So don't have a heart attack around me."