The NHL Network will have both games too.

from USA Hockey,

The U.S. National Junior Team faces Russia today in the semifinals of the 2017 IIHF World Junior Championship here in Montreal. The two teams met in the preliminary round (3-2, USA) and are meeting in the semifinals for the second consecutive year (2-1, RUS). Puck drop is set for 3:00 p.m. ET and will be televised in the U.S. live on NHL Network with updates also available on Twitter @USAHockey with the hashtags #USAWJC and #WorldJuniors.

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The gold medal game will be tomorrow at 8:00pm ET on the NHL Network and TSN.