(1) Nature of Business and Basis of Presentation

Our business is focused on providing sustainment services for U.S. Department of Defense ("DoD") legacy systems and equipment and professional services to DoD and federal civilian agencies, including the United States Postal Service ("USPS"). Our operations consist primarily of supply chain management, vehicle and equipment maintenance and refurbishment, logistics, engineering, energy and environmental, IT solutions, health care IT, and consulting services performed on a contract basis. The majority of our contracts are with United States Government ("government") agencies and other government prime contractors.

Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. In our opinion, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three- and nine-months ended September 30, 2013 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2013. For further information refer to the consolidated financial statements and footnotes thereto included in our 2012 Form 10-K.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates affecting the financial statements include accruals for contract disallowance reserves, recoverability of goodwill and intangible assets, self-insured health claims and earn-out obligations related to acquisitions consummated after January 1, 2009.