Apple Power Supply vs Electrical Storm

This one came from a work colleague who took his MacBook Pro on a trip, and following a storm, the Macbook was dead.
On his return and after buying a new power supply, the Mac was all good, the poor power supply having given its life to save the computer. The photo below was taken during the autopsy and shows the damage.

Note the crater on top of the IC; that is impressive, given how tough those things are.