Remarks: BNSF 1933 south leads three other units including an unrenumbered SD40-2. an ES44AC, and a SD39-2. This train also called the "Buck" is a daily job that goes from Longmont, CO to Denver, CO, picks up and drops off cars down there. This location is Niwot, Co along Colorado Highway 119 and MP 38 on the Front Range Subdivision.