Girlfriend. Well i wont back down and celebrating an american original. Rock legend tom petty passing away overnight just days after his final concert. This morning, tributes pouring in from around the world. Wont back down and we do say good morning, america. As you can imagine, a lot to get to on this Tuesday Morning. Here is a live look at las vegas. Still so many questions about how and why that tragic shooting happened. What a staggering death toll, 59, at least 59 people killed, more than 520 injured. The victims were just there to enjoy the concert sunday night. Now the entire city and country reeling. Look at the cover of the las vegas newspaper. Unimaginable. So, so true. All over the country people are paying their respects, honoring the lives of those lost. Take a look at the Las Vegas Strip. Usually so bright, but last night turned off all the lights and it went dark. World news tonight anchor david muir is leading us off this morning. Hes there in las vegas. Good morning,