WATCH LIVE: Sochi Paralympics, Day 4

Oksana Masters

The fourth day of Paralympic action is highlighted by biathlon as the U.S. continues its quest for its first gold medal.

Oksana Masters, who was born in Ukraine, already has a cross-country silver medal to go with her 2012 Paralympic bronze in rowing. She’s slated to start the 10km sitting biathlon event.

2010 Paralympic bronze medalist Andy Soule leads the U.S. charge in the men’s 12.5km sitting race.

Russia led the overall- and gold-medal counts with 24 and seven, respectively, after three days. The U.S. is tied for the second most overall medals — seven — but has zero golds so far.

Biathlon, 2 a.m. ET – CLICK HERE TO WATCH LIVE

Five competition storylines to watch at Paralympics | Full broadcast schedule