Williams Scotsman and DEWALT Join Forces To Address Construction Jobsite Theft Through Strategic Alliance; SITELOCK(TM) Portable Wireless Alarm System Protects Jobsite Mobile Offices and Storage Units

February 20, 2006

BALTIMORE--(BUSINESS WIRE)--Feb. 17, 2006--Williams Scotsman International, Inc. (NASDAQ:WLSC), a leading provider of modular space solutions, announces a strategic relationship with DEWALT Industrial Tool Company to integrate the SITELOCK(TM) portable wireless alarm system into its mobile office fleet for use on construction jobsites. With theft being the number one concern for contractors, Williams Scotsman's mobile offices for construction sites will come equipped with the SITELOCK(TM) Jobsite Security Portable Alarm System base unit and motion sensor(s). Customers agreeing to usage terms need only follow simple instructions to lease and activate the system. SITELOCK(TM) also offers others sensors and accessories designed to communicate wirelessly with the base unit and protect key assets on a jobsite up to 2000 feet away.

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