The words Dick Cheney used to describe the shooting of his friend:

Vice President Cheney accepted responsibility today for the accidental shooting of a 78-year-old man in a hunting accident last weekend, saying that watching his friend fall to the ground bleeding after he was injured was an "image I'll never get out of my mind."

"You can't blame anybody else," Cheney said in an interview with Fox News Channel. "I'm the guy who pulled the trigger and shot my friend. It's a moment I'll never forget."

Cheney said that after he shot Harry Whittington on Saturday afternoon at a Texas ranch, he ran over to him and said, "I had no idea that you were there. He didn't respond."

Cheney said that Whittington was laying on his back, bleeding on the ground. "You could see where the shot had struck him," Cheney said. "It was one of the worst days of my life."

Brit Hume's interview with Cheney will air on Fox's Special Report today at 6 PM EST.