Hi Richard,
Yes, that fourth image shows a departing flight out of LAX, towards the storm. The jets were taking off towards the west, which is typical, and then turning sharply to avoid the cell.
That image was actually a much longer exposure than I had intended. While adjusting the aperture setting, I had just inadvertently set the shutter speed to 30 seconds (instead of leaving it on "bulb"). The CG occurred a few seconds after I had opened the shutter, and I tried to end the exposure, but my camera would not allow that until the 30 seconds had elapsed! The image wound up very overexposed, but I made it look somewhat decent with Photoshop. It was lucky that the aircraft was taking off into the frame at the time. Most of the LAX CG shots were 4 to 8 second exposures at about f6.1 to f8 (ISO 100), and I estimate that the lightning activity was four to eight miles away.
Bill