The Fasts serve in Brazil through PAZ International. After serving eleven years in Lábrea, on the Purus river, a tributary of the Amazon, in 2022 they were asked by the leadership team to move to Apuí, 600 km by road to the east of Lábrea. In Apuí, they are pastoring the local Paz church (Church of Peace), along with another couple who are preparing for church leadership.