Adjusted EBITDA is not a recognized term under generally accepted accounting principles, or GAAP, in the United States and may not be defined similarly by other companies. Adjusted EBITDA should not be considered an alternative to net income, as an indication of financial performance, or as an alternative to cash flow from operations as a measure of liquidity. There are limitations to using non-GAAP financial measures, including the difficulty associated with comparing companies that use similar performance measures whose calculations may differ from ours.

Adjusted EBITDA is a key measure used in internal operating reports by management and the board of directors to evaluate the performance of our operations and is also used by analysts, investment banks and lenders for the same purpose. Adjusted EBITDA is a measure of our current period operating performance, excluding charges for capital, depreciation related to prior period capital expenditures and items which are considered non-core or non-recurring in nature.

We believe that the elimination of certain non-cash, non-operating or non-recurring items enables a more consistent measurement of period to period performance of our operations, as well as a comparison of our operating performance to companies in our industry. We believe this measure is particularly important in a capital intensive industry such as ours, in which our current period depreciation is not a good indication of our current or future period capital expenditures. The cost to construct and launch a satellite and build the related ground infrastructure may vary greatly from one satellite to another, depending on the satellite’s size, type and capabilities. For example, our QuickBird satellite, which we are currently depreciating, cost significantly less than our WorldView-1 or WorldView-2 satellites. Current depreciation expense is not indicative of the revenue generating potential of the satellite.

Adjusted EBITDA excludes interest income, interest expense, income taxes and loss on early extinguishment of debt because these items are associated with our capitalization and tax structures. Adjusted EBITDA also excludes depreciation and amortization expense because these non-cash expenses reflect the impact of prior capital expenditure decisions which are not indicative of future capital expenditure requirements. Adjusted EBITDA excludes other income (expense), net, and loss on derivative instrument because these items are not related to our primary operations.

We use Adjusted EBITDA in conjunction with traditional GAAP operating performance measures as part of our overall assessment of our performance and we do not place undue reliance on this measure as our only measure of operating performance. Adjusted EBITDA should not be considered a substitute for other measures of financial performance reported in accordance with GAAP.