
A passenger goes through a full-body scanner at Logan International Airport in Boston, Wednesday, Nov. 24, 2010. (AP Photo/Michael Dwyer)

From left: In this courtroom sketch, suspected Somali pirates Mohammed Modin Hasan, Abdi Mohammed Gurewardher, Abdi Mohammed Umar, Gabul Abdullahi Ali and Abdi Wali Dire listen during jury selection on Nov. 10 at the federal courthouse in Norfolk, Va. The five men were convicted Wednesday of attacking a U.S. Navy ship off Africa's coast. (Associated Press)

Sarah Palin greets fans and supporters as she signs her book "America by Heart," during a book signing event at a Barnes & Noble store on Tuesday, Nov. 23, 2010, in Phoenix. (AP Photo/Ralph Freso)

Protesters break down a construction barrier as thousands of students protest against tuition fees at Whitehall in London, Wednesday, Nov. 24, 2010. (AP Photo/Sang Tan)

Student protesters target a police van during a demonstration against an increase in university tuition fees, in Westminster, central London, Wednesday Nov. 24, 2010. (AP Photo/Anthony Devlin/PA)

Student protesters target a police van during a demonstration against an increase in university tuition fees, in Westminster, central London, Wednesday Nov. 24, 2010. (AP Photo/Anthony Devlin/PA)

A woman and children stand next a car burned by alleged treffickers at Cavalcanti neighborhood, in Rio de Janeiro, Brazil, Wednesday Nov. 24, 2010. Rio's entire military police force was ordered into the streets after more gang burned cars. (AP Photo/ Silvia Izquierdo)

People take refuge in a store during a police operation against organized crime in the Vila Cruzeiro slum in Rio de Janeiro, Brazil, Tuesday Nov. 23, 2010. Rio's entire military police force was ordered into the streets after more gang attacks ended with two motorists shot dead, cars burned and mass robberies on highways. (AP Photo/Silvia Izquierdo)

Relatives cry at Preah Kossamak Hospital, where the bodies of stampede victims are laid, in Phnom Penh, Cambodia, on Tuesday. (Associated Press)