Barry Young is the vice president of operations for Strategos International, which provides safety training for businesses, schools, hospitals and churches. He previously served as director of security at two churches in Kansas City.

The Rev. Joey Spann is the minister of Burnette Chapel Church of Christ in Antioch, Tenn. He was shot twice during a Sept. 24, 2017, attack on his church.

The Rev. Rob Schenck is an ordained evangelical Christian minister and president of the Dietrich Bonhoeffer Institute in Washington, D.C. In response to rising gun violence, he is working to challenge evangelical support for gun ownership.

The Rev. Erik J. Richtsteig is the pastor of St. James the Just Catholic Church in Ogden, Utah. He was leading Mass in June 2013 when a man with a gun entered his sanctuary and shot a parishioner.

The Rev. Frank Pomeroy is the pastor of First Baptist Church in Sutherland Springs, Texas. He was away from his congregation when a gunman entered the church and killed 25 people.

The Rev. Eric S.C. Manning is the pastor of Mother Emanuel African Methodist Episcopal Church in Charleston, S.C., the site of a 2015 mass shooting. He has served in this role since June 2016.

Beth Kissileff is an author and journalist based in Pittsburgh. She is a member of one of the congregations that meets at Tree of Life synagogue and, after the Oct. 27 shooting, shared stories about the religious lives of the victims she knew.

Balhair Singh Dulai is the president of the Sikh Temple of Wisconsin, the site of a 2012 shooting that left six people dead. The temple’s website still features a tribute to victims.

Dallas Drake is co-founder of and senior researcher at the Center for Homicide Research, which compiled a database of church shootings that occurred between 1980 and 2005.