Hot Zs and Huge Stacks: A Railfanning Day Around Barstow, CA

I spent most of a day railfanning in the Barstow, CA-area in early December, 2023 along the Needles and Cajon Subs. Although I saw a handful of different train types, the action was certainly dominated by hot Z trains and massive Stack trains.
This was a Tuesday during the UPS "Peak Season". Tuesdays are usually considered the "hottest" day for eastbound Z trains on the western side of the Transcon. A ZLACCXB7 was seen, which is a UPS train that only runs on Tuesdays during Peak Season.

[@danielwalton4563]

So in 1992 Gordon screams.

[@tonyordaziii7250]

Do you know how many miles is the Union Pacific La Grande Sub, Sharp Sub and the Lynndyl Sub. The Lynndyl Sub is from Lynndyl, UT to Milford, UT.

[@TrainVidsWithTom]

I do not.