On May 23-24, Next Dor's six pilot sites and 10 of its affiliates from around the country joined together for a Next Dor gathering. Hosted by Temple Israel in Boston (home of the Riverway Project), these professionals spent two days delving into how best to build, sustain, and support 20s and 30s communities with the Next Dor team and each other. Here, Rabbi Leah Berkowitz of Judea Reform Synagog…