BNSF’s Cheyenne, WY, to Denver, CO, local had BNSF SD75M 8231 with EMD SD60M 9077. Cars were handed off to the Longmont Local at Longs Peak Siding north of Longmont, CO. BNSF B40-8W 520 and GP39-2 2703 worked the Longmont local - took cars north to Loveland, CO.