While picking up a Radon test I had the opportunity to see something interesting.
When I inspected the vacant house the gas could not be turned on because the gas company said the piping system would not hold pressure.
When returning to pick up the Radon test I found that the HVAC technician had been to the home and was doing troubleshooting of the gas piping.
The tech said the entire piping system had to be replace because of lightning.
Whether it was lightning or not it was a lesson to pay attention to the bonding of CSST.
edit: arrow added to #5