2Q YTD Cash Flow Summary

☆ Non-GAAP Financial Measures Disclosure This presentation, and today's conference call remarks, contain non-Generally Accepted Accounting Principles (GAAP) financial measures (as defined by SEC Regulation G). While we believe that these non-GAAP financial measures may be useful in evaluating Lockheed Martin, this information should be considered supplemental and is not a substitute for financial information prepared in accordance with GAAP. In addition, our definitions for non-GAAP measures may differ from similarly titled measures used by other companies or analysts. Definitions of Non-GAAP Measures Segment Operating Profit / Margin Segment Operating Profit represents the total earnings from our business segments before unallocated corporate income and expense, interest expense, other non-operating income and expense, and income tax expense. This measure is used by our senior management in evaluating the performance of our business segments. The caption "Unallocated Corp Inc / (Exp)" reconciles Segment Operating Profit to consolidated Operating Profit. The caption "Other Pre-Tax Expense (net)" reconciles Segment Operating Profit to consolidated Earnings Before Income Taxes. Segment Margin is calculated by dividing Segment Operating Profit by Sales. Mid-point Segment Margin represents the mid-point of the outlook range for Segment Operating Profit divided by the mid-point of the outlook range for Sales. 2010 Outlook (Apr) $46,250 47,250 $5,025 - 5,125 10.9% $4,295 -4,395 9.3% Sales Segment Operating Profit Mid-Point Segment Margin Consolidated Operating Profit Mid-Point Operating Margin (1) Decrease in Sales Outlook reflects transfer of PAE to Discontinued Operations 2010 Outlook (July) $45,500 46,500 (1) $5,025 - 5,125 11.0% $4,315-4,415 9.5% ROIC Management believes that Return on Invested Capital (ROIC) provides greater visibility into how effectively Lockheed Martin deploys capital. Management uses ROIC as a target level to help ensure that overall performance is understood and acceptable when capital is invested. ROIC is not a measure of financial performance under GAAP, and may not be defined and calculated by other companies in the same manner. ROIC should not be considered in isolation or as an alternative to net earnings as an indicator of company performance. Chart 16 Free Cash Flow Lockheed Martin defines free cash flow as GAAP cash from operations less the amount identified as expenditures for property, plant and equipment. July 27, 2010

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