Katy Perry pretty much has the corner on the 4th of July performance market. You know it. We know it. And Macy’s, who got the California gurl to belt out “Firework” for a pre-taped segment during its 4th Of July Fireworks Spectacular, knows it. Katy was decked out in an American flag dress-and-cape number (nothing unusual for her) while a crew of American sailors were front and center for her gig. And, oh, yes — there were real fireworks shooting off from the stage. Watch the patriotic performance above.