Oscar-nominated Sept. 11 drama seen in Berlin

(CBS/AP) BERLIN - Director Stephen Daldry has brought his Sept. 11 drama "Extremely Loud & Incredibly Close" to the Berlin International Film Festival, saying the film was sensitive to make.

The Oscar-nominated movie, showing out of competition, stars newcomer Thomas Horn as a precocious child whose father, played by Tom Hanks, dies in the 2001 attacks. The movie also stars Oscar winner Sandra Bullock as the boy's mother.

Horn said Friday he didn't really remember that day - he was 3 at the time - but "became more emotionally connected to the event" by going to New York and talking to people who had lost relatives.

Daldry, the director of "The Hours" and "The Reader," says the team making "Extremely Loud" knew how sensitive the subject was and tried to keep some of the victims' family groups close in the process.

CBSNews.com spoke to Hanks, Bullock and Horn at the New York red carpet premiere of "Extremely Loud," watch here: