A recent surge in antisemitic incidents has some U.S. synagogues increasingly turning to trainings led by security experts who can advise on what to do if there's a violent threat on the premises. LISTEN to the latest episode of "Start Here" where ever you get your podcasts. SUBSCRIBE to ABC News on YouTube: bit.ly/2vZb6yP Latest updates: abcnews.go.com Watch FULL EPISODES on Hulu: abcn.ws/3bzvQQn #news #synagogue #crime #abcnews #starthere