now to covid and the first reaction from president biden to a federal judge striking down his administration s requirement to mask up on airplanes, buses and other public transportation. this after what s been basically an overnight 180 on masking by many of the nation s biggest airlines and car services. nbc s garrett gumbrok is at atlanta airport. and also critical care physician and nbc medical contributor melanie hilton. how are travelers responding to this mask mandate removal in atlanta? reporter: hey there, garrett. travelers here at hartsfield jackson are ready for takeoff. there are 31 states and washington, d.c. that are currently seeing an increase in covid cases. but you wouldn t be able to know that by looking around this airport. i d say about half the folks here are wearing a mask. the other half are not. and that s very different than what we saw from my flight down