Six months after the Gulf of Mexico oil spill, much of the regulatory changes have been focused on how to promote safety in the operations of offshore drillers. The Department of the Interior has since required third-party audits of blowout preventers, while federal officials have instituted site inspections. "We really were facing a situation that we had not faced before. ... This event, hopefully, was an aberration ... a freak occurrence," said Erik Milito, the American Petroleum Institute's director of upstream and industry operations.