all right. we're just a few hours away from with the we love new york city, the concert, and athena jones, what about those crowds? what's it going to look like? >> reporter: hi, fred. thousands and thousands of people. the beginning of the line. this guy in line since 4:00 a.m. this line now stretches at least three blocks long, lining up for the gates to open before this concert starts. you've got on the screen there, maluma, patty smith, bruce springsteen, ll cool j, a long list of performers but here's the key. you have to have proof you received at least one vaccine shot. they'll be able to show the cdc vaccine card, prove they've had a vaccine shot using the excelsior app. you can't get in the concert unless you've had at least one shot. this is a celebration of the