New missionaries arrive from the Missionary Training Center.
A week to two weeks following the incoming of new missionaries, they return to Manchester, the center point of the mission (You'd not get that from the map. It's because the major freeways only flow north and south.)
New missionaries return with their trainers (Training is the first leadership responsibility the president looks for at transfer. Trainers set the tone not only for the new missionaries but for the entire mission..)