Larry, I think Athearn is trying to be prototypically accurate by only putting beacons on models painted for roads line where the real engine has one. I know that the SOO, SP, and CP engines have them but most don't. Installing a strobe is as easy as buying a 3mm flashing LED, driling a hole in the roof, adding the correct resistor for the current rating of the LED, and wiring to the positive and negative lead that I think is vacant on the light boards that don't have the strobe. You can even buy strobes that run off a watch battery if you don't want to do any wiring.