BNSF S-LPCOIG3-28A (aka UP 3JLPOAJ 28), a Joliet, IL to Oakland, CA intermodal, winds through the Tehachapi Mountains at the aptly-named CLIFF siding. The intermodal it is meeting here, the Q-RICWSP6-31A, broke a drawbar a minute later and caused the Mojave Sub to grind to a halt for 2 hours, with 3 trains stacked up on either side.