Preventing spills or incidents through good project planning, design, implementation and leadership is our primary objective. However, if a spill or other unplanned event occurs, we have plans and processes in place to ensure we can respond effectively. We also conduct thorough investigations of all significant incidents to understand the root cause, share lessons learned and prevent future incidents. We report on our spill performance annually in our Sustainability Report.
We work with organizations such as the American Petroleum Institute (API), IPIECA, the global oil and gas industry association for environmental and social issues and International Oil and Gas Producers (IOGP) to enhance emergency preparedness by sharing best practices and developing industry-wide guidelines. Through these organizations, we also encourage regulators to support international cooperation, including bringing outside resources into specific locations to improve local spill response capabilities.
Because we place great value on having trained and capable emergency responders, we conduct various training events and exercises each year for our global operations in compliance with company standards and local regulatory requirements, including the U.S. Oil Pollution Act. Lessons learned and best practices from key exercises are shared within our internal emergency response community to further enhance our capabilities.
Our investment in spill response technologies includes membership in Oil Spill Removal Organizations (OSROs) across the globe, which affords us access to substantial inventories of, and the latest advances in, proven response equipment. In the Gulf of Mexico, we are members of two OSROs, Marine Spill Response Corporation (MSRC) and Clean Gulf Associates (CGA). Our Alaska business unit has memberships in three large OSROs, including Alaska Clean Seas (ACS), Cook Inlet Spill Prevention & Response, Inc. (CISPRI) and Ship Escort/Response Vessel System (SERVS) for our exploration and production operations on the North Slope, in Cook Inlet and our Polar Tanker operations in Prince William Sound, respectively. Our membership in MSRC, as well as a contract with the National Response Corporation (NRC), provides coverage for our Polar Tankers operations along the west coast.
In addition to our U.S.-based OSRO memberships, the company also belongs to the Oil Spill Response Limited (OSRL) and Norwegian Clean Seas Association for Operating Companies (NOFO). OSRL provides global substantial response resources staged at various locations around the world, whereas NOFO, also with significant resources, provides regional OSRO support for our Norway operations. We are also members in other, somewhat smaller, local OSROs associated with many of our global operations.