. >> leslie riegle. >> thank you. just to reiterate the purpose of hearing today is to receive comments from all interested parties on the proposed endangerment finding and advance notice of proposed rulemaking. this action as many of you know was published in the federal register on july 1, 2015. in this action the administration proposed to determine that greenhouse gas concentrations in the atmosphere and into the public health and welfare of current and future generations within the meaning of section 231 a of the clean air act. in addition to administrative proposing to find greenhouse gas emissions from certain classes of engines use primarily in commercial aircraft are contributing to the mix of the greenhouse gas air pollution in our atmosphere. today's hearing provides interested persons the opportunity for oral presentation and used in arguments. witnesses will be allowed to make oral statement which stimulate expand on in writing for the record. when you're finished with your comments members may ask clarif

leslie riegle, doug wolf and michael saraceno. >> i'm director of environmental policy at the aerospace industries association. thank you for the opportunity to testify on epa's proposed endangerment finding, advanced notice of proposed rulemaking on aircraft greenhouse gas emissions. aia is the largest aerospace trade association representing the nation's major aerospace and defense manufacturers. we represent more than 300 u.s. manufacturing companies with nearly 1 million skilled employees. our members are recognized across the globe for manufacturing reliable, uncompromisingly safe aircraft to connect passengers and cargo helps defend our national security. our industry is heavily regulated and must pass grueling safety and air worthiness criteria on any aircraft or changes to existing aircraft. we never compromise on safety. aviation is a global industry and works under the united nations international civil aviation organization icao which is instead a global aviation standards are environments and safety for over 50 years. this globally harmonized model has worked well for the un