Members of the Russian team photograph Nina Reithmayer of Austria during a training run at the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Natacha Pisarenko)
A worker makes final preparations at the Sanki Sliding Center, the venue for bobsleigh, skeleton and luge, before the start of the 2014 Winter Olympics, Monday, Feb. 3, 2014, in Krasnaya Polyana, Russia. (AP Photo/Natacha Pisarenko)
Summer Britcher of the United States warms up with a ball before her training run for the women's luge singles at the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Natacha Pisarenko)
Erin Hamlin of the United States completes a training run for the women's luge singles at the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Michael Sohn)
A member of the security team watches over the sliding center during women's luge training at the 2014 Winter Olympics, Tuesday, Feb. 4, 2014, in Krasnaya Polyana, Russia. (AP Photo/Natacha Pisarenko)
Denny Morrison, a member of the Canadian speed skating team, appears after a 2014 Winter Olympics team news conference, Tuesday, Feb. 4, 2014, in Sochi, Russia. (AP Photo/Patrick Semansky)
Denny Morrison, left, a member of the Canadian speed skating team, sits with teammate Christine Nesbitt after a 2014 Winter Olympics team news conference, Tuesday, Feb. 4, 2014, in Sochi, Russia. (AP Photo/Patrick Semansky)