Here’s 1970s b-roll of California Highway Patrol ("CHP") officers getting ready for work at their headquarters in Northern California. Most of the clip takes place in a parking lot where many CHP vehicles are parked. This is clip 2 of 2. 

We see officers, or at least one officer, doing the following: squeegeeing car windows, testing the emergency lights on a squad car, driving off on a CHP motorbike, reversing a CHP vehicle out of a parking space and driving away, entering and exiting a building.

After interior shots of a CHP vehicle, we see close-ups of a CHP vehicle’s red and blue emergency lights spinning and flashing.

The final shot of the clip shows a CHP vehicle speeding down a highway.