Airlines for America (A4A), the industry trade organization representing the leading US airlines, announced that its member carriers are voluntarily implementing temporary health acknowledgment policies and procedures for passenger travel as an additional level of protection during the pandemic. Alaska Airlines, American Airlines, Delta Air Lines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines and United Airlines already require or will require passengers to complete a simple health acknowledgment during the check-in process. Health acknowledgements typically cover three primary areas: face coverings – assurance that the passenger will bring a face covering and wear it at the airport, on the jet bridge and onboard the aircraft;  symptoms – assurance that the passenger is not experiencing a temperature (100.4F) or higher), coughing, shortness of breath/difficulty breathing, loss of taste or smell, chills, muscle pain and/or sore throat; and exposure – assurance that the passenger has not had close contact with someone who tested positive or had symptoms of COVID-19 in the last 14 days.