ABM Industries Incorporated is a provider of facility solutions. The Company operates through five segments: Business & Industry (B&I), Technology & Manufacturing (T&M), Education, Aviation, and Technical Solutions. The B&I segment includes janitorial, facilities engineering, and parking services for commercial real estate properties, traditional hospitals and non-acute healthcare facilities. The T&M segment provides janitorial, facilities engineering, and parking services to industrial and high-tech manufacturing facilities. The Education segment delivers janitorial, custodial, landscaping and grounds, facilities engineering, and parking services for public school districts, private schools, colleges, and universities. The Aviation segment supports airlines and airports with services ranging from parking and janitorial to passenger assistance, catering logistics, air cabin maintenance, and transportation. The Technical Solutions segment includes mechanical and electrical services.