Despite the personal stress and strain from the pandemic, our people have continued to run a reliable operation and deliver phenomenal customer service avoiding the significant issues that have plagued far too many in the aviation industry. I want to start by expressing my thanks to the team at United for taking care of our customers and each other during an eventful summer, and what we've done in the last 19 months stand out even more than in normal times, as we've also been a part of the humanitarian relief efforts around the world flying over 160 million doses of vaccine, returning thousands of refugees from Afghanistan, and delivering thousands of tons of oxygen canisters and medical equipment to India, among many other things.
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Good morning everyone, and thanks for joining us today. And now, I'd like to turn the call over to Scott. In addition, we have other members of the executive team on the line available to assist with the Q&A. Joining us in Chicago today to discuss our results and outlook are Chief Executive Officer, Scott Kirby President, Brett Hart Executive Vice President and Chief Commercial Officer, Andrew Nocella Executive Vice President and Chief Financial Officer, Gerald Laderman. For a reconciliation of these non-GAAP measures to the most directly comparable GAAP measures, please refer to the tables at the end of our earnings release.
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Also during the course of the call, we'll discuss several non-GAAP financial measures.