Prayers and tears filled the scene of Tuesday's memorial service at Fort Hood Army Base in Texas, where 13 soldiers were killed in Thursday's shooting rampage.

Gwen Ifill speaks with two reporters about the ongoing investigation into last week's attack at Fort Hood, including new revelations that the alleged shooter had ties to a radical cleric in Yemen known for his anti-American teachings.

President Obama traveled to Fort Hood Tuesday to address a memorial service for the victims of last week's shooting rampage that left 13 dead and 29 wounded. Kwame Holman reports.

Gwen Ifill speaks with Spencer Hsu of the Washington Post about the investigation into last week's shooting rampage at Fort Hood.