Book excerpt: "Airports - especially in the past two decades - have generally sought to promote and increase collaboration among the members of the airport community, particularly between an airport and its airlines. One metric of this trend has been the increase in the number of U.S. airports with full-time emergency managers, from fewer than 10 in 2007 to more than 120 today. Collaboration and increased professionalism in airport emergency management have gone hand in hand. No matter whether the incident is aircraft-related or an incident in the terminal - such as an active shooter, a bomb threat, or other hazard - the goal of airports, airlines, and others in the airport community is to achieve safety, security, compassion, customer service, regulatory compliance, and reputation. Achieving these goals can contribute to resiliency and to the protection of critical infrastructure and key resources. Although air travel is one of the safest modes of travel, and airports are among the safest public spaces in the United States, air-travel incidents do occur. ACRP Synthesis 99: Emergency Working Groups at Airports documents these working groups and how they assist victims and their families and friends in the weeks following an incident." -- Publisher's website.