Steven Holcomb, 37, the "blind" bobsled driver who piloted the U.S. four-man team to gold in 2010, died unexpectedly at the Olympic Training Center in Lake Placid, N.Y., on May 7 while preparing for the '18 Games. Holcomb, who suffered from keratoconus, a degenerative eye disease, had 20/500 vision, although contacts improved it to 20/60. Still, driving was a challenge, so in '08, a year after winning the World Cup, he had a solution—the Holcomb C3-R—applied to his cornea. Three years later his sled, Night Train, broke the U.S.'s 62-year gold drought in four-man. He added two bronze medals in Sochi. The Essex County coroner says further tests are needed to determine the cause of death.