Pittsburgh Synagogue Shooting

Cody Murphy, Sabrina Weihrauch, and Amanda Godley hug after an active shooter situation at Tree of Life Synagogue on Saturday, Oct. 27, 2018. (Andrew Stein/Pittsburgh Post-Gazette via AP)

First responders are seen at the Tree of Life Synagogue where a shooter opened fire, In Pittsburgh, Pennsylvania, Oct. 27, 2018, causing multiple casualties.

A SWAT team arrives at the Tree of Life Synagogue in Pittsburgh, Pennsylvania, where a shooter opened fire, Oct. 27, 2018.

People gather on a corner near the Tree of Life Synagogue in Pittsburgh, Pennsylavania, where a shooter opened fire Oct. 27, 2018.

A SWAT police officer and other first responders arrive after a gunman opened fire at the Tree of Life synagogue in Pittsburgh, Pennsylvania, Oct. 27, 2018.

A police officer on a motorcycle passes through a roadblock as he responds after a gunman opened fire at the Tree of Life synagogue in Pittsburgh, Pennsylvania, Oct. 27, 2018.