An investigation including redacted information confirmed that two whistleblowers working at the Washington Navy Yard before the 2013 shooting were correct in their assessment that the facility faced security vulnerabilities.

The Office of Special Counsel was approached by former Navy Strategic Systems Program managers Sparky Edwards and Vernon Londagin, who said their internal complaints were not acted on seriously. An investigation launched by the Office of Special Counsel and completed in May 2014 proved seven of eight allegations of security vulnerabilities.

Investigators determined that the Navy unit’s security director “did not meet his responsibility to ensure that all physical and information security standards were met.”