ACS Infrastructure Canada and ACS Infrastructure Development, Inc. are the North American subsidiaries of Iridium Concesiones de Infraestructuras, S.A. (“Iridium”), the concession arm of Actividades de Construcciones y Servicios S.A. (“ACS Group”). The ACS Group is ranked first in ENR’s “The Top 250 International Contractors” list and has over 162,000 employees, a presence in over 50 countries and annual net sales in 2012 of €38.4 billion (approximately $50 billion). In addition, ACS Group has consistently been ranked first among the list of World Top Transportation Developers by Public Works Financing Magazine, ranking as the leading concession group in the world from 1994 through 2005 and from 2007 through 2012. ACS Group has over 40 years of experience in leading and developing concession projects around the world, and has successfully participated in over 152 public private partnerships to date. Its current infrastructure portfolio includes 28 highway projects, 5 railways and 12 public facilities, including bridges, transport hubs, airports, parking structures, social infrastructure and ports.