Ferguson officer: 'I know I did my job right'

FERGUSON, Mo. -- Ferguson police officer Darren Wilson says he couldn't have done anything differently in his confrontation with Michael Brown to have prevented the 18-year-old's shooting death.

Wilson made his first public statements Tuesday during an interview with ABC News' George Stephanopoulos. He offered details of the Aug. 9 shooting like those contained in his grand jury testimony, released a day earlier after it was decided he wouldn't be indicted in the death.

Wilson says he felt like it was his duty to chase Brown after a confrontation at his police vehicle. When asked about witness accounts that Brown at one point turned toward Wilson and put his hands up, he responded "that would be incorrect."

He told Stephanopoulos he has a clean conscience because "I know I did my job right."