Simone Biles' dazzling comeback in an action-packed Olympics Day 2; Nation's largest active wildfire ravages California; Israel retaliates at Hezbollah for attack that killed 12 children and teens; and more on tonight's broadcast.

Team USA takes gold in women's gymnastics; Acting Secret Service chief says attempted assassination of Trump could have been prevented; Israel says it targeted Hezbollah commander in airstrike near Beirut; and more on tonight's broadcast.