." >> it was a year ago, january 15th, 2022, a bitter cold day in colleyville, texas. >> it was in the 30s in texas. doesn't usually get that cold so when a visitor knocked on the door of congregation beth israel, then rabbi charlie citron walker didn't think twice about welcoming him in. >> when i opened the door to just offer a word, he asked if we had a night shelter, so i let him in. i got him some tea. >> reporter: the rabbi then began the sabbath service on zoom with three congregants. >> my back was turned away from the congregation. i thought i heard the click, the click of a gun. i went to the back of the room, and that's when he pulled the gun on me. >> and within a few seconds he got up and started yelling, identify got a bomb. >> jeff cohen came to pray and became a hostage. >> my phone was sitting next to me and i quickly dialed 911. >> people a wawatching the live stream could hear the gunman. >> people believe there to be one individual that is holding people hostage inside beth israel congregation. >> the hostage standoff lasted for nearly 11 hours while fbi special age