Kate Bishop and Tony Stark
Kate was only aware of the sign careening down toward her head a second before it would have hit her--right when it was stopped by someone overhead. "Jeez-!!" She exclaimed, though by the time she cringed and ducked her head, Iron Man was above her holding the sign and then flying it away.
With a deep breath, she waved the last of the people on the sidewalk into the building. Kate turned her attention to Iron man up above her. "Yeah, I'm okay. Thanks for the assist." Her eyes were drawn to the alien ships above them. The sky above Vegas filled with flying saucers...?
"You wouldn't happen to know where I can get my hands on a bow and some arrows, do you?"