PG&E executives resisted efforts to reform the flawed record-keeping that was a key cause of a fatal explosion in San Bruno, according to a witness that federal prosecutors intend to present at a criminal trial for PG&E that's linked to the disaster. "It troubles us very much to see that there was this push-back from PG&E executives, and it shows that there continues to be a culture of business as usual at PG&E and prioritization of profits over safety," said Connie Jackson, San Bruno's city manager.