the fbi and atf now responding. [gunfire] fighting between the israeli army and hamas intensifies, as most of gaza becomes a battlefield. israeli forces are hammering targets behind me. they say they are now operating across the gaza strip. norah: record floods hit the northwest. the rescues underway with more rain in the forecast. meta is facing a disturbing new lawsuit. the social media giant accused of enabling the exploitation of children. the alarming details in our exclusive tonight. norah: and remembering legendary producer norman lear, who brought us iconic sitcoms. [singing] [applause] norah: good evening to our viewers in the west, and thank you for being with us. we want to begin tonight with new developments in a shooting on a college campus just hours ago. we are just learning from law enforcement that multiple people were killed after a gunman opened fire inside the business school at the university of nevada, las vegas. tonight, we have new re