We operate in a changing environment that involves numerous known and unknown risks and uncertainties that could materially adversely affect our operations. The risks described below highlight some of the factors that have affected, and in the future could affect our operations and financial condition. Additional risks we do not yet know of or that we currently think are immaterial may also affect our business operations. If any of the events or circumstances described in the following risks actually occur, our business, financial condition or results of operations could be materially adversely affected.

State and other public employee unions may bring litigation that seeks to limit the ability of public agencies to contract with private firms to perform government employee functions in the area of public improvements. Judicial determinations in favor of these unions could affect our ability to compete for contracts and may have an adverse effect on our

We have made and expect to continue to make acquisitions that could disrupt our operations and adversely impact our business and operating results. Our inability to successfully integrate acquisitions could impede us from realizing all of the benefits of the acquisitions, which could weaken our results of operations.