For further details refer to Item 1. Financial Statements, Note 14 Contingencies. SEC regulations require the disclosure of any proceeding under environmental laws to which a government authority is a party unless the registrant reasonably believes it will not result in sanctions over a certain threshold. The Company uses a threshold of U.S. $1 million for the purposes of determining proceedings requiring disclosure. From time to time, the Company or its subsidiaries may be subject to information requests from U.S. State or Federal environmental regulatory authorities inquiring as to the Company’s compliance or remediation practices in the U.S. In September 2020, the Company received an initial request for information from the U.S. Environmental Protection Agency ("EPA") inquiring into the Company’s compliance with the mobile source provisions of the Clean Air Act (“CAA”). The Company has been providing information in response to the EPA’s initial and follow-up requests, and the EPA has issued Notices of Violations, which preliminarily identify certain categories of alleged non-compliance with civil provisions of the CAA pertaining to locomotives and locomotive engines. In December 2022, the U.S. Department of Justice (“DOJ”) sent a communication requesting a meeting with the Company to discuss potentially resolving any alleged noncompliance which included an initial draft consent decree from the DOJ. That initial meeting occurred in January 2023 and communications are ongoing. Neither the EPA nor the DOJ has issued a final compendium of alleged violations or a final demand for corrective or mitigating actions, and it remains too early to provide a fulsome evaluation of the likely outcome with respect to either the nature of any alleged violations, or the amount of any potential civil penalty. However, any potential civil penalty amount is not anticipated to be material. The Company will continue to fully cooperate and engage in discussions to resolve the matter.