WFI Awarded Extension to Multi-Site Network Deployment Contract From Regional Wireless Carrier Valued at $5 Million

SAN DIEGO, June 8, 2005 /PRNewswire-FirstCall via COMTEX/ — Wireless Facilities, Inc. (WFI) (Nasdaq: WFII), a global leader in the design, deployment and management of wireless telecommunications networks, today announced it has been awarded a contract extension to a multi-site network deployment contract from a regional wireless carrier. Under the terms of the award, valued in excess of $5 million, WFI was selected to continue as the services vendor for the company’s ongoing CDMA and GSM overlay project. This work was initiated in 2003 and is scheduled for completion by year end 2005.

According to the terms of the agreement, WFI will conduct project management, including RF engineering and optimization, deployment and installation and commissioning services for multiple sites located throughout the northwest region of the U.S. Further terms of the award were not disclosed.

“Having gained the unique knowledge of our customer’s technology vision, processes, network and geographic footprint, we are able to further evolve our relationship as a strategic engineering and deployment partner,” said Eric DeMarco, President and Chief Executive Officer of WFI. “It is gratifying to continue to perform quality turnkey engineering and deployment services on behalf of this valued customer.”

About WFI

Headquartered in San Diego, CA, WFI is an independent provider of systems engineering, network services and technical outsourcing for the world’s largest wireless carriers, enterprise customers and for government agencies. The company provides the design, deployment, integration, and the overall management of wired and wireless networks which deliver voice and data communication, and which support advanced security systems. WFI has performed work in over 100 countries since its founding in 1994. News and information are available at www.wfinet.com. (code: WFI-mb)

Notice Regarding Forward-Looking Statements

This news release contains certain forward-looking statements including, without limitation, expressed or implied statements concerning the Company’s expectations regarding future financial performance and market developments that involve risks and uncertainties. Such statements are only predictions, and the Company’s actual results may differ materially. Factors that may cause the Company’s results to differ include, but are not limited to: changes in the scope or timing of the Company’s projects; slowdowns in telecommunications infrastructure spending in the United States and globally, which could delay network deployment and reduce demand for the Company’s services; the timing, rescheduling or cancellation of significant customer contracts and agreements, or consolidation by or the loss of key customers; the adoption rate of new wireless data services; financial constraints on our customers that could cause us to write off accounts receivable or terminate contracts; failure to successfully consummate acquisitions or integrate acquired operations; changes in the Company’s effective income tax rate; the rate of adoption of telecom outsourcing by network carriers and equipment suppliers; the rate of growth of adoption of WLAN and wireless security systems by enterprises; and competition in the marketplace which could reduce revenues and profit margins. The Company undertakes no obligation to update any forward-looking statements. These and other risk factors are more fully discussed in the Company’s Annual Report on Form 10-K filed on March 31, 2005 and in other filings made with the Securities and Exchange Commission.

Media Contact: Michael Baehr VP of Communications Wireless Facilities, Inc. 858.228.2799 Direct michael.baehr@wfinet.com Investor Contact: Rochelle Bold Senior VP of Corporate Development and Investor Relations Wireless Facilities, Inc. 858.228.2649 Direct rochelle.bold@wfinet.com

SOURCE Wireless Facilities, Inc.

media, Michael Baehr, VP of Communications, +1-858-228-2799, michael.baehr@wfinet.com, or investors, Rochelle Bold, Senior VP of Corporate Development and Investor Relations, +1-858-228-2649, or rochelle.bold@wfinet.com, both of Wireless Facilities, Inc.

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