ABM to Acquire Sentinel Guard Systems.

SAN FRANCISCO -- ABM Industries Incorporated (NYSE:ABM) announced the signing of a definitive agreement to acquire substantially all of the operating assets of Tracerton Enterprises, Inc., a Los Angeles-based company that principally operates as Sentinel Guard Systems. Sentinel, with annual revenues in excess of $13 million, is a provider of security officer services primarily to high-rise, commercial and residential structures. In addition to its Los Angeles business, Sentinel also operates an office in San Francisco. Closing is expected within 30 days, subject to the satisfaction of certain conditions. Upon closing, Sentinel will be merged into ABM's American Commercial Security Services (ACSS) California operations. Glenn Gilmore, son of Tracerton's founder and sole shareholder, Timothy Gilmore, will join ACSS as regional vice president and will be responsible for ACSS's California operations.

"We are looking forward to having the Sentinel organization join ACSS," stated John Moore, president of ACSS. "We have long respected Glenn Gilmore as an industry leader in San Francisco and I look forward to him joining our team," he added.

Timothy Gilmore, CEO of Tracerton Enterprises, Inc., commented, "We are creating a combined California operation that will enhance everything both companies do with our existing and future clients. ABM is an outstanding, solid company with an excellent history and exciting vision for the future. It is an honor to participate in that vision," he added.

"The anticipated acquisition of Sentinel continues ABM's strategic decision to expand its national security business," stated Henrik C. Slipsager, president and CEO of ABM. "Together with Security Services of America, which we acquired in March, ABM now operates one of the largest American-owned security services companies," he added.

ABM Industries Incorporated is among the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2003 revenues in excess of $2.2 billion and more than 70,000 employees, ABM provides janitorial, parking, security, engineering, lighting and mechanical services for thousands of commercial, industrial, institutional and retail facilities in hundreds of cities across the United States and British Columbia, Canada. In addition to ABM Security Services, which includes American Commercial Security Services (ACSS) and Security Services of America (SSA), the ABM Family of Services includes ABM Janitorial, Ampco System Parking, Amtech Lighting Services, ABM Engineering, CommAir Mechanical and ABM Facility Services.