10 Things to Know for Today

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

1. ISLAMIC STATE GROUP SILENT AS DEADLINE PASSES

Families of a Japanese journalist and Jordanian military pilot remain in limbo, a day after the latest purported deadline for a possible prisoner swap comes and goes.

2. RAP MOGUL 'SUGE' KNIGHT IS ARRESTED

The Death Row Records founder is being held on $2 million bail in connection with a hit-and-run incident in Compton, California, that left one man dead.

3. WHICH CASE IS 35 YEARS IN THE MAKING

Pedro Hernandez is going on trial in the murder and kidnapping case of 6-year-old Etan Patz, who fueled missing-child activism in 1979.

Wisconsin Gov. Scott Walker is expanding his political operation as he fights for early momentum in the crowded field of GOP presidential prospects.

5. WHAT IS UNNERVING AN OLYMPIC CITY

More than a dozen people in Rio de Janeiro have been struck by stray bullets from gunbattles in recent weeks, unnerving the city hosting the 2016 Games.

6. SLUMPING SALES OF BARBIE DRAG DOWN HER MAKER

Mattel released its fourth-quarter earnings, detailing the weak performance that led to the resignation of its chairman and CEO.

Residents quashed the three-year, $30 million hydroelectric plant project, saying construction damaged their homes and tainted their drinking water.

8. MEET THE FIRST SOCIAL SECURITY RECIPIENT

Seventy-five years ago, Vermont's Ida May Fuller helped launch the granddaddy of all entitlement programs.

9. KATY PERRY GOING 'OLD SCHOOL' FOR HALFTIME SHOW

AP's Howard Fendrich reports that the pop star's surprise musical guest will be Grammy winner Missy Elliott.