4.13.2. Government Agency Staff. Federal realty acquisitions require the contributions of a variety of government agency staff, including realty specialists, surveyors, engineers, title researchers, negotiators, project managers, contract procurement specialists, executives, appraisers, review appraisers, and attorneys. Critical to the valuation process, agency staff identify property for federal acquisition; work with government and outside appraisers to develop an appropriate scope of work for each valuation assignment; provide necessary information to appraisers, such as property descriptions, title information, maps, surveys and other data; and issue legal instructions. Agency staff are also tasked with explaining the United States’ offer of just compensation and its basis, which often involves explaining the appraisal process, the data considered by the appraiser, and the reasons improper considerations are disregarded. Agency staff also rely on appraisals to determine just compensation for the purpose of making offers under the Uniform Act, estimate project acquisition costs, and make judicious use of public funds. Finally, while only a small fraction of federal acquisitions involve litigation, it is impossible to predict with certainty which acquisitions—even voluntary acquisitions—will result in litigation.1197 Even if a new appraisal may be obtained for litigation (often required in condemnation to reflect the appropriate date of value),1198 every appraisal should be well prepared, reflecting sound instructions and a scope of work appropriate for its purpose.