KINGSPORT — More than 60 area churches have donated money to advertise “Unashamed,” a Christian prayer rally and half-mile march set for this Saturday in downtown Kingsport. Evangelist preacher Tyler McMullins is event coordinator. It all started with what McMullins describes as a God-sent vision back in January or February. “God gave me a vision for a prayer rally to pray for our nation and pray for our communities,” McMullins said on Monday.