community, entered the school with a handgun and possibly a rifle it appears he was killed by officers who responded to the shootings. president biden addressed the nation a short time ago more on his message in a moment this comes just ten days after the mass shooting at a supermarket in buffalo in which ten people were killed. one more horrific and stunning act of gun violence in a nation so weary from it we begin with morgan chesky in texas. reporter: lester, every update that s come in today on this story has only brought more heartbreak for this tight-knit community of only about 15,000 people. tonight, a massive law enforcement presence has descended on this small town, and it is converging on robb elementary school behind me. covered up in crime scene tape as investigators scour this area for evidence and try to find what caused thi 18-year-old gunman to go inside and open fire reporter: tonight, at least 21 live have been cut short. according to the state senator
we re back with more nightly news after this fo r foadr uladtsul wtsit e d myasthenia gravis o wharo e arpoe sipotisi ve fo r foadr uladtsul wtsit e d myasthenia gravis o wharo e arpoe sipotisi for acetylcholine receptor antibodies, it mitay m fayee fl eelild is moving without you. bu t butht e thpie ctpiurcte, with vyvgart. in ain c ali cnilicanil, rtpaicrtipicaniptsan atsch aiecd ilday ilaby ilabitilieie s rtpaicrtipicaniptsan atsch aiecd ilday ilaby ilabitilieie with vyvrtga artdd aeddded tor current treatment. an d anvyd vgvyarvgt ad clinical trial participants hiacevhie evree durecede muscle weakness. vy vgvyarvgt armat y mainy crie the risk of infection. in ain c ali cnilicanil, the most common infections we rewe ureri unariryna trd respiratory tract infections. te llte yllou yr oudor ctdooe a history of infections iorf iyof u yohau veha svs of an infection. vgvyarvgtar tca n cacan cause allergic reac. th e thmoe stmo cstom cmoomns clinudcle udree spreirspay tract infection, he