Accident investigators are still looking for the black box recorders from last week's jet crash outside Boston.

A spokesman for the NTSB says there's a wide debris field about two-thousand feet from the Hanscom Airfield runway where the Gulfstream jet attempted to take off on Saturday night.

People who called 9-1-1 after the crash said the explosion shook their houses and sent up a giant column of smoke and flames.

One of those on board was Lewis Katz, the co-owner of the Philadelphia Inquirer, The Daily News and Philly.com.