Re: OCC Harry: Harry will likely be one of the first on the scene. Odds are he'll do what he can to help capture the dragons or just drive them away until the experts can handle it. But, of course, his first mission will be to protect anyone around him.
Natasha: She's not playing games. She's going to do what she can to protect people- but she's also not stupid enough to face a dragon head-on by herself. She will, however, offer backup should any of her friends want to come along.
Thirteen: She is not going to be happy if anyone tries to hurt them. Full on, she'll do what she can to stop this peacefully and protect people.