What will I see or hear when PSPS drone patrols are in use, especially at night?

You might see white or colored lights from the drone as it flies along the power lines — these lights are more noticeable at night. You may also hear brief, low-level noise.  

Drones only fly over power lines, so you will typically see or hear them for a short time. Sometimes, a drone may need to spend extra time over one area to get a closer view or take photos of any damage.