FILE - In this Feb. 11, 2015, file photo, Sen. Dianne Feinstein, D-Calif., speaks during an interview with The Associated about the CIA torture report, in her Capitol Hill office in Washington. Social media giants including Twitter, Yahoo, Facebook and Google are pushing back against Senate legislation that would require them to alert federal authorities of any terrorist activity. The Senate Intelligence Committee has included the requirement in a broader intelligence bill. The House didn’t include a similar provision in its bill. (AP Photo/J. Scott Applewhite, File)

Could Twitter stop the next terrorist attack?

Popular social media sites have become instrumental in helping terrorist groups expand their influence, despite widespread industry policies against posting or promoting terrorist-related content.

FILE - This Feb. 5, 2015 file photo shows the Anthem logo at the health insurer's corporate headquarters in Indianapolis. Anthem is buying rival Cigna, in a deal valued at $54.2 billion announced Friday, July 24, 2015, that will create the nation's largest health insurer by enrollment, covering about 53 million patients in the U.S.  (AP Photo/Michael Conroy, File)

Indianapolis based company Anthem buys rival Cigna

Anthem, based in Indianapolis, is currently the nation’s second-largest health insurer, while Cigna ranks fourth in terms of enrollment. Anthem Inc. specializes in selling individual coverage and insurance to workers of small businesses. It also has grown its government business, which includes Medicare, Medicaid and coverage of federal employees.

Law enforcement and other emergency personnel respond to the scene of a deadly shooting at the Grand Theatre on Thursday, July 23, 2015, in Lafayette, La. (Leslie Westbrook/The Advocate via AP)

Police ID man who killed 3 in movie theater shooting

The alleged gunman 59-year-old drifter John Russell Houser fired his weapon “numerous times” before shooting himself at the Grand Theatre in Lafayette, city Police Chief Jim Craft told a news conference.

A vendor of second hand goods waits for customers in the Monastiraki tourist district of Athens, Thursday, July 23, 2015. Greece's radical left-led government emerged bloodied but alive early Thursday from a key vote in parliament, which overwhelmingly approved new creditor-demanded reforms despite a revolt among hardliners in the main coalition partner. (AP Photo/Giannis Papanikos)

10 Things to Know for Today

Your daily look at late-breaking news, upcoming events and the stories that will be talked about today: