Al von Hollen, of S&S Turbine services, is testing a spark ignitor box from a GE LM1500.
This vid shows ( hopefully ) the massive power of these ignitors. You can hear the power of the spark, but the camera's sampling rate seems to be out of sync with the actual flash. Hopefully you can see at least one. When I say "that's blinding", it is. For a few minutes after shooting this, I was seeing spots...