Central Park, Steve Rogers

The glorious thing about New York is that if people recognize you, you are probably just another person they recognize and they pay you little heed.

Also, the footage from the battle had no close-ups and was blurry, so all the public know of Black Widow is a redhaired woman in a black catsuit. Natasha can live with that.

She can also live with the New York branch of SHIELD being annoyed at her for skipping out and taking a long lunch. It's not as if she's out of the country (this time), and she'll come back. Eventually.

For now, Natasha is sitting on a bench in Central Park sipping coffee, looking like any other office-worker out on her lunch break; dressy slacks with matching jacket, a stylish blouse, smart heels with a thick heel and a thick strap, a gun in a holster underneath her jacket-

Okay, maybe normal officer workers don't have guns.