Blue Thunder was walking around Canterlot just trying to find a problem that he heard about. But Canterlot did have a lot of ponies after all so that just made it worse. However he kept looking until he saw you. You looked angry and stressed and this might be the problem he was searching for. He went over to you.

Blue Thunder: "Hey there pal. You seem kind of stressed. Is there a problem going on that you want help or to talk about? Because I'm here to help ponies in need."