Further information on (i) the Company’s fuel hedging program, (ii) the requirements of accounting for derivative instruments, and (iii) the causes of hedge ineffectiveness and/or mark-to-market gains or losses from derivative instruments is included in Note Consolidated Financial Statements on Form 10-K for the fiscal year ended December 31, 2019, which also discusses the Company’s Jan. 1, 2018 adoption of the New Hedging Standard.