EBITDA from Continuing Operations is defined as Earnings from Continuing Operations Before Income Taxes plus net interest expense, depreciation, and amortization expense. Adjusted EBITDA from Continuing Operations is defined as EBITDA from Continuing Operations less amounts related to the Severance and Retention Agreement with DHL which ended in March 2010, plus net derivative losses, plus the write-off related to the termination of certain credit agreements in conjunction with the refinancing of the Company's debt, plus asset impairment charges.
Management uses EBITDA from Continuing Operations as an indicator of the cash generating performance of the operations of the Company. Management uses Adjusted EBITDA and Adjusted Pre-tax Earnings from Continuing Operations to assess the performance of its operating results among periods. EBITDA and Adjusted EBITDA from Continuing Operations, and Adjusted Pre-tax Earnings should not be considered in isolation or as a substitute for analysis of the Company's results as reported under GAAP, or as an alternative measure of liquidity.