Oscar Pistorius broke down and cried on the witness stand Tuesday while describing the moment he realized he’d fatally shot his girlfriend Reeva Steenkamp. The South African runner testifying for a second day in his murder trial said he’d initially thought an intruder was in his Pretoria home when he fired shots through a locked bathroom door. “I flung the door open, I threw it open and I sat over Reeva and I cried. And I don't know, I don’t know how long. I don't know how long I was there for. She wasn't breathing.” We are taking adjournment.” After the adjournment, the judge cancelled testimony for the rest of the day.