WFI Amended Release

Johnson & Perkinson Files Amended Notice of Filing of Class Action Lawsuit Against Wireless Facilities, Inc.

South Burlington, VT – March 22, 2007: Johnson & Perkinson ("J&P"), hereby amends its prior notice regarding the filing of this suit. J&P’s prior notice incorrectly stated that if you boughtWireless Facilities securities between March 29, 2001 and March 12, 2007, you may, not laterthan sixty (60) days from March 16, 2007, move the court to serve as lead plaintiff. The correctdate for moving for lead plaintiff is 60 days from March 19, 2007. While other law firms have published advertisements referencing the filing of a suit on behalf ofsuch purchasers, J&P, along with its local counsel, Scott & Scott, LLP, assembled and filed theonly suit which has been brought on behalf of the plaintiff and the proposed class of purchasersof securities of Wireless Facilities, Inc. (NASDAQ: WFII) (“WFI” or “Company”) during theperiod March 29, 2001 to March 12, 2007 inclusive (the “Class Period”). The plaintiff is represented by J&P, which has extensive experience in prosecuting investor classactions and actions involving financial fraud. J&P is a litigation boutique dedicated tomaximizing shareholders’ returns and keeping the lead plaintiffs involved in the litigation. Attorneys Johnson and Perkinson are both former employees of the Securities and ExchangeCommission. Members of the firm have prosecuted complex class actions on behalf of plaintiffsin the areas of securities and consumer fraud since 1985. Based in South Burlington, Vermont,the firm has prosecuted leading actions on behalf of defrauded investors against numerous publiccompanies resulting in the recovery of many millions of dollars and has been singled out for itsexcellence by various courts. The firm is litigating, or recently resolved litigation, as lead or co-lead counsel in securities class actions against Xerox, Priceline, i2, Allaire, and Xchange, andserves on the Executive Committee in the Global Crossing case.   If you wish to discuss this action or have any questions concerning this Notice or rights orinterests with respect to these matters, please contact: Eben F. Duval at Johnson & Perkinson,toll free at 1-888-459-7855, via email at email@jpclasslaw.com, visit our website atwww.jpclasslaw.com, or write to Johnson & Perkinson, 1690 Williston Road, P.O. Box 2305,South Burlington, Vermont 05403.