Amtrak’s California Zephyr meets a westbound BNSF freight at Rocky, Colorado, on the afternoon of June 28, 2014. In a half hour or so, eastbound No. 6 be in Denver, seen on the horizon jutting u... (more)
A loaded Union Pacific coal train descends the front range of the Rockies at Rocky, Colorado, early on the morning of February 9, 2015. Locomotives are placed in the heavy train 2+3+2 (two units o... (more)