Federal investigators have released a preliminary report on a safety incident involving Marine One. The incident occurred on August 4 near Ronald Reagan Washington National Airport. According to the report, communication failures played a role in the incident.

Air traffic controllers and the pilots of President Donald Trump's helicopter had met to discuss communication issues one week prior. They agreed on an alternative plan to relay radio calls, but it was unsuccessful on the day of the incident.

The National Transportation Safety Board's report shows that a jet was allowed to take off as Marine One was leaving the White House, potentially violating safety procedures. Further details on the incident are available from the source.