mrBlaQ acting like he knows how the photographer shot this, but gets it his facts all wrong.
Quoted from the photographer's blog:
"The shots were taken at 4-10 second exposures and at 0 second intervals. So immediately after the shutter closes it opens again to take the next shot. This ensures that the lights from the planes move smoothly through the frame. The long exposures are what produces the streaks of light, which means that the longer the exposures the longer the streaks of light."