Balto’s potential began to shine when he joined the sled dog team led by musher Gunnar Kaasen. Kaasen recognized qualities in Balto that others had overlooked. While not initially chosen as the lead dog, Balto proved to be reliable, calm under pressure, and fiercely loyal to his team. This team, formed under the brutal conditions of Alaskan winters, became a tightly bonded unit. Each dog played a vital role, relying on one another to overcome treacherous terrain, whiteout blizzards, and subzero temperatures. Balto earned Kaasen's trust during training runs, demonstrating an uncanny ability to navigate through difficult trails and avoid dangers like thin ice. This trust would become crucial in their most critical mission yet: the Serum Run of 1925.