On Sunday, almost 1.6 million American air passengers passed through security checkpoints. Compare that to just about 130,000 the same day last year.Travelers are rushing to buy plane tickets, airlines are scrambling to add flights and rework schedules. Plus, some new guidance around masking. And, the Biden administration’s plan to go after tax evaders. Guests: Axios' Joann Muller and Felix Salmon.Credits: Axios Today is produced in partnership with Pushkin Industries. The team includes Niala Boodhoo, Sara Kehaulani Goo, Dan Bobkoff, Justin Kaufmann, Nuria Marquez Martinez, Sabeena Singhani, Amy Pedulla, Naomi Shavin, and Alex Sugiura. Music is composed by Evan Viola. You can reach us at podcasts@axios.com.Go deeper: Biden committed to capital gains tax hike for rich CDC: Fully vaccinated people don't need to wear masks outside