Simplify the following text for a Grade 11 native English-speaking person.
Original: After Katara freed him , Sokka initially believed that the Airbender might be a Fire Navy spy , and he eventually grew xenophobic enough to banish him from the village .
Simplified: After Katara freed him , Sokka initially believed that the Aang might be a Fire Navy spy , and he eventually grew xenophobic enough to banish him from the village .