What follows is an edited transcript of my conversation with Sam Hammond. Petersen: My guest today is Sam Hammond. He's a policy analyst at the Niskanen Center. Sam, welcome to Economics Detective Radio. Hammond: Hi! Petersen: Our topic today is supersonic air travel. Sam has written an article titled "Make America Boom Again" along with co-author Eli Dourado which revisits the U.S. Federal Aviation Administration's ban on supersonic flight over the United States. So Sam let's start at the very start. Let's start by talking about the history of flight. How do we get from the Wright brothers to supersonic flight? Hammond: Well I think the most notable thing about the early history of aviation is how quickly and how rapidly we innovated. So the Wright brothers flew their initial voyage, their milestone flight in 1903 at seven miles per hour and within forty years we were already breaking the speed of sound. And actually very shortly after that not only were we breaking the speed of sound within military jets but we were on the cusp of commercializing it through the Concorde. So, what characterizes the early history of aviation is really rapid innovation. Part of that was driven by obviously two world wars but also that trickled out and percolated into the commercial space. That brings us to today. So in the progress that we made in air speeds in the first say 40 to 50 years of manned flight, we've actually regressed since then. Petersen: Okay, so the Concorde starts flying in I believe it's 1969 and the subject of your paper---the ban brought in by the F.A.A. on supersonic travel over the United States---comes in just four years later in 1973. So what happened in that four-year period? How did we go from rapidly advancing to banning what was at the time the latest technology? Hammond: It really began in the 60's. Everyone was seeing the progress that was being made in supersonic aircraft. And it was widely appreciated that it was only a matter of time before it would be commercialized. And there was actually a bit of a race going on between European countries and America of who would develop the first and the best supersonic jet. Because at the time, you know, this is way before Reagan deregulated the airlines. So these were the national projects almost akin to the space race. So in the 60's the F.A.A. and NASA began investigating whether supersonic airplanes could fly overland, because obviously they had them already in the form of military jets. And so they conducted a number of tests. One of the most important and famous tests was the test over Oklahoma City. So in 1964 the F.A.A. began a test over Oklahoma City where supersonic jets---military jets---would fly over the city eight times per day for six months continuously. And these were just regular old military jets, nothing about them was designed to mitigate the sonic boom. So eight times a day people in Oklahoma were hearing the sonic boom. It was rattling their windows. And at the end of it---at the end of the six-month period---even though about 75% of the people they asked said that they could tolerate the booms indefinitely, there were tens of thousands of complaints. And that's when the F.A.A. examined the complaints and rejected the vast majority of them as spurious. And that led to this huge public backlash. And so that was picked up by a guy named Richard Wiggs who founded the Anti-Concorde project. So the Concorde was being developed in the 60's by a partnership between France and Britain and it sort of represented the frontier of technology---not just aviation technology but technology in total---and Richard Wiggs had this view of the environment and technology as being in conflict. So he believed that as technology advances, we lose touch with our natural environment. And he was actually one of the most innovative, maverick early environmental activists. They're commonplace today but he was actually a pioneer. And so he took the complaints that occurred in Ok