Willis put the Under-17 Team back on top midway through the second period with a power-play goal of his own. As the man advantage wound down, Willis walked into the top of the circle and fired a laser over the shoulder of Finnish goaltender Patrik Joensuu to give the U.S. a 2-1 lead.
Nate Chizik held Finland to one goal through the frame, making several highlight-reel saves to preserve the lead.
Easton Johnson (Luverne, Minn.) added another power-play tally for Team USA at the 11-minute mark. After multiple scoring chances in front, the puck found Johnson at the point, and he ripped a shot through traffic to make it 3-1 heading into the third period.
In the final period, Finland made it a one goal early on after a scramble and shot from the point.
With eight minutes remaining in the game, Finland tied the contest after a rebound found the stick of Paavo Fugleberg in front of the net.
Neither team could break the deadlock through regulation or overtime, sending the game to a shootout tied at 3-3.
In the shootout, Finnegan Sears (Medford, Mass.), Freddie Schneider (Edina, Minn.), Carter Meyer scored for the U.S. and Nate Chizik stopped three out of the four shooters, the cap off the 4-3 win for the Under-17 Team.
The U17s return tomorrow night, Nov. 4, as they play Canada Red in the second game of the World U17 Hockey Challenge. Puck drop is set for 6:30 p.m. ET and will be streamed to HNLive.