This April will mark two years since tragedy struck the end of the Boston Marathon finish line, prompting the entire country to come together as 'Boston Strong'.
And this week, Dzhokhar Tsarnaev, the man who prosecutors say is responsible for the Boston bombings, is in court for the beginning of what could be a lengthy trial. He has pleaded not guilty to the thirty federal charges against him.
Because so many people have seen the images, from the first explosion to the capture of Tsarnaev just outside of Boston, finding an impartial jury may take time. To be impartial means you treat all people and groups equally without bias.
The defense and the prosecution will select 12 jurors and six alternates from a pool of about 1,200 people.
Prosecutors expect that and the rest of the trial to take about four months to complete.