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 the company’s calculations. Additionally, this financial measure does not include certain significant items such as interest income, interest expense, income taxes, depreciation and amortization, non-cash impairment charges, non-cash stock compensation expense, the gain (or loss) on extinguishment of debt and net other income (expense). Adjusted EBITDA and Adjusted EBITDA Margin should not be considered a substitute for other measures of financial performance reported in accordance with GAAP.Unlevered Cash Flow is defined as net cash provided by (used in) operating activities less capital expenditures, plus cash interest paid and less interest income all as disclosed in the Consolidated Statements of Cash Flows or the Consolidated Statements of Operations. Management believes that Unlevered Cash Flow is a relevant metric to provide to investors, as it is an indicator of the operational strength and performance of the company and, measured over time, provides management and investors with a sense of the growth pattern of the business. There are material limitations to using Unlevered Cash Flow to measure the company against some of its competitors as it excludes certain material items such as payments on and repurchases of long-term debt, interest income and cash interest expense. Level 3 does not currently pay a significant amount of income taxes due to net operating losses, and therefore, generates higher cash flow than a comparable business that does pay income taxes. Additionally, this financial measure is subject to variability quarter over quarter as a result of the timing of payments related to accounts receivable and accounts payable and capital expenditures. Unlevered Cash Flow should not be used as a substitute for net change in cash and cash equivalents on the Consolidated Statements of Cash Flows.