An investigative hearing into a deadly collision of a US Army helicopter and a plane that killed 67 revealed a discrepancy in ...

Matt Ponzar is out as the head of the Appraisal Subcommittee, capping off a week of tumult at the chief regulator of the U.S.

The move comes days before a Senate committee votes on the nomination of Neil Jacobs, who was found to have violated the agency’s scientific integrity policy ...