Long train, about 4/5 km ! three locomotives ahead, two behind
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/16103393@N05">Eric Salard</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/airlines470/16082468684/">Burlington Northern and Santa Fe Railway</a>