No criminal charges will be filed against the driver of a snowplow that slammed into a school bus, killing two passengers, on Jan. 26 near Albin, Wyo. Brett Yuill, 8, and his sister Candace, 11, were killed in the accident, which took place when the snowplow, driven by 61-year-old Dennis Coffman, crossed the highway and sheared off most of the bus’ right side, where the children were seated. Coffman told investigators that he suddenly couldn’t steer the snowplow, which careened sideways into the oncoming bus. County officials said speed was not a contributing factor. The children’s brother, Brandon, 18, and the driver of the bus, Robert Anderson, were injured in the crash. Investigators said Anderson tried to steer the bus to the left of the oncoming snowplow and came within inches of averting contact altogether.