Robert asked me to build an animation sequencer for this piece that would sequence the 3 light sources.  While the trajectory and the exploding debris are simply neon that flashes, the lighting for the globe posed an interesting problem.  What I suggested was that he mount several 100 Watt light bulbs inside and then fill the holes with red acrylic so the light would shine out through them.  I engineered the controls to keep the light bulbs barely glowing all the time so that they would light quicker.  This also eliminates the thermal shock that wears lamp out more quickly.  Another benefit is that with many lamps, if a few burn out it would not be very noticeable - engineers call this a "graceful failure mode".

Robert also asked me to program the sequence so that the timing would vary randomly. The sequence varies in speed, and the interval between each cycle varies from 1 to 6 seconds.

The small control box has lights to indicate the sequence, and a knob to set the level for the lamps when they are in the dim mode.  I used a Basic Stamp to program the timing sequence, and heavy duty solid state relays for the switching.  The relays are protected by (red) MOV surge absorbers, since neon sign transformers are  highly inductive.  An industrial dimmer is wired across the relay which controls the lamps.

Here is Impact under construction at Robert's studio.

And being installed on site.