What UP train did I see this AM?

[passengerfan]

Around 11:30 AM this morning I witnessed a UP train with two high HP units and fifteen mechanical Reefers northbound on the old SP line to Sacramento as it passed through Stockton. The train was making track speed and the reefers were operating. Anyone have an idea of the identity of this train. Have not witnessed it before and am curious about any train with two high HP units and only trailing fifteen cars.

[UPTRAIN]

If it was a high priority parishable train they will put 2 high horsepower units on there in case on fails they will not have a drastic delay.