WFI Announces Date for Fourth Quarter and 2005 Year End Financial Results and Conference Call

SAN DIEGO, Jan 20, 2006 /PRNewswire-FirstCall via COMTEX News Network/ — WFI (Nasdaq: WFII), a global leader in the design, deployment, and management of wireless communication networks, technology networks and security systems, announced today that it will publish financial results for the fourth quarter and 2005 fiscal year on Tuesday, February 21, 2006 at 1:05 p.m. PST (4:05 p.m. EST). A live conference call will begin at 1:30 p.m. PST (4:30 p.m. EST). The call will be webcast and can be accessed at WFI’s Web site at www.wfinet.com.

A replay of the call will be available from 3:30 p.m. PST on February 21, 2006 through 8:00 p.m. PST on March 8, 2006, by dialing (888) 203-1112, (Reservation #9948507).

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)

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 & Investor Relations Wireless Facilities, Inc. 858.228.2649 Direct rochelle.bold@wfinet.com

SOURCE WFI

Media, Michael Baehr, VP of Communications, +1-858-228-2799, michael.baehr@wfinet.com, or Investors, Rochelle Bold, Senior VP of Corporate Development & Investor Relations, +1-858-228-2649, rochelle.bold@wfinet.com, both of WFI

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