Sheryl Chaffee remembers the January evening when astronaut Mike Collins came to the door and asked to speak with her mother. The two talked in a bedroom of the Chaffee home. Then Collins emerged and Chaffee and her brother were sent in to speak with their mother. "So we went back there, and she told us that our dad was never coming home again," said Chaffee, who was 8 years old. "Of course, I really didn't understand that. I think I even asked her, 'what, are you getting divorced?' " Sheryl Chaffee's mother, Martha, explained that there had been a fire and her father, Roger, was dead. "And then she gave me a necklace with two hearts, that he had planned on taking up to space with him," she said. It has been 50 years since the Apollo 1 fire killed Roger Chaffee at Cape Kennedy's Launch Complex 34 in Florida. Chaffee, along with astronauts Virgil "Gus" Grissom and Ed White ...