pelosi, this time on her home turf. a new poll shows about 1/3 of bay area democrats think she should step down. see you in 30 minutes. ♪ ♪ captioning sponsored by cbs t glor: on the "cbs evening ndws" this friday: a flooding threat that extends hundreds of yiles. one city wonders will the dam hold? the new generation of american astronauts say they have the right stuff for commercial space travel. and the forgotten cofounder who left apple before it bore fruit. but first, the headlines in 60 seconds. >> reporter: millions of residents are bracing as dangerous storms move up the tost coast. > officials in virginia working to stabilize a dam that last night, they said, could break at any moment. >> my whole backyard, everything, is like a lake. >> las vegas metro police completed its investigation into the deadliest mass shooting in modern history. g> the sheriff saying they probably will never know what the motive was. >> by all accounts, stephen naddock was an unremarkable man.