"Big Boy" is what Sue said when she saw this picture of a Union Pacific train at Tehachapi. The term was apt, I told her, because "Big Boy" was the term given by the Union Pacific to the largest steam engines ever built. It also is apt because this last weekend my middle son Jeff and I were like boys chasing trains over the Union Pacific's former Southern Pacific Tehachapi mountain pass. We had perfect weather and tons of trains. The grades on these hills are brutal and these modern Big Boys were working like demons pulling a heavy train around Tehachapi Loop. Jeff and I had a great time and we saw many, many trains!