I think Aero is a nice dog because in the story it said that Aero can visit children and is always gentle with them. He is also friendly by vist children in shcool and he likes to obey Officer Mike and together they demonstrate the diffrerernt commands Aero will obey.  I think Aero is a hero because Aero  can find children by using his sense of smell.   Aero is a happy dog, he is always nice to people and children. He is a nice friendy happy dog.