Northrop Grumman 2012 Annual Report Download - page 52

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-42-
Item 8. Financial Statements and Supplementary Data
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Shareholders of
Northrop Grumman Corporation
Falls Church, Virginia
We have audited the accompanying consolidated statements of financial position of Northrop Grumman Corporation
and subsidiaries (the “Company”) as of December 31, 2012 and 2011, and the related consolidated statements of
earnings and comprehensive income, changes in shareholders’ equity, and cash flows for each of the three years in
the period ended December 31, 2012. These financial statements are the responsibility of the Company’s
management. Our responsibility is to express an opinion on the financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board
(United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the
accounting principles used and significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of
Northrop Grumman Corporation and subsidiaries at December 31, 2012 and 2011, and the results of their operations
and their cash flows for each of the three years in the period ended December 31, 2012, in conformity with
accounting principles generally accepted in the United States of America.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United
States), the Company’s internal control over financial reporting as of December 31, 2012, based on the criteria
established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the
Treadway Commission and our report dated February 4, 2013 expressed an unqualified opinion on the Company’s
internal control over financial reporting.
/s/ Deloitte & Touche LLP
McLean, Virginia
February 4, 2013