ABC News anchor Bob Woodruff, who suffered serious head and body injuries while covering the Iraq war in January, is now able to converse normally and has not suffered the kind of "alterations" that afflict those with serious brain trauma, Woodruff's brother David has told the Los Angeles Times. However, he added, his brother is still undergoing therapy aimed at restoring cognitive functions. "It's exercising the brain," he said. He also tires easily. David Woodruff said that it's still too early to predict when Bob will be able to return to the air. "He's 100% committed to getting back to work and getting back to where he was before the attack," Woodruff told the Times. "But he's got a lot of work ahead of him."