Pacific Architects and Engineers (commonly known as PAE, or PA&E) is an American defense and government services contractor. Founded in 1955 by Edward Shay, it is headquartered in Arlington, Virginia. For a time after 2016 it was owned by Platinum Equity until it became listed on Nasdaq in 2018. In February 2022 the company merged with Amentum Government Services Holdings LLC and its stock was delisted from Nasdaq. PAE is a major supplier of services to the U.S. Department of State. Other significant clients have included the United Nations, the UK Ministry of Defence, the New Zealand Defence Force, and the Central Intelligence Agency. History PAE was founded in California in 1955 by Edward Shay, an American engineer who had worked in Japan during the occupation of Japan; its earliest business deals involved property development in Japan. Shay continued as chair, CEO, and sole shareholder of PAE until 1974 when 40 percent of the company was sold to an employee stock ownership program. The program sold its shares back to Shay in 1988. Following Shay's death in 1995, his son – Allen E. Shay – assumed control of the company as chairman and CEO. PAE was acquired by Lockheed Martin in 2006 in what was reported, in a subsequent court filing, to be a cash transaction valued at approximately $1.2 billion. During Lockheed's ownership, PAE moved its headquarters from Los Angeles, California to Arlington, Virginia. It was sold by Lockheed, in 2011, to Lindsay Goldberg for about $700 million. Lindsay Goldberg sold PAE to Platinum Equity in 2016. The company became publicly traded on the NASDAQ in February 2020. Acquisitions In 2015 PAE acquired both A-T Solutions and the Global Security and Solutions unit of U.S. Investigations Service. Two years later, in 2017, it purchased FCi. In 2018, PAE acquired Macfadden & Associates (Macfadden), a leader in international disaster response operational support. Operations and clients PAE specializes in "expeditionary logistics" and "nation building" including construction and supply of basecamps for peacekeeping missions, airfield management and maintenance, foreign aid distribution, police training, and elections monitoring, and it has additional capabilities including technical support for weapons of mass destruction elimination, vessel and cargo tracking software, crime scene software, and weather forecasting. According to PAE, its clients – as of 2016 – included the United Nations, New Zealand Defence Force, U.S. Department of Energy, UK Ministry of Defence, National Science Foundation, National Oceanic