[solved] What assurance, if any, is there that the financial statements are in compliance

Answer: On page 108, we see a Report of Independent Registered Public Accounting Firm from Ernst & Young LLP in which they provide reasonable assurance that the financial statements are free of material misstatement. Further on page 109 in a second, Report of Independent Registered Public Accounting Firm, we see that they write. “In our opinion, Southwest Airlines Co. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015, based on the COSO criteria.” And “We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Southwest Airlines Co. as of December 31, 2015 and 2014, and the related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2015 and our report dated February 2, 2016 expressed an unqualified opinion thereon.”
Southwest information from:
https://www.sec.gov/Archives/edgar/data/92380/000009238016000175/luv-12312015x10k.htm#s33F2C1321617BA7BB9B30236ED8E4834