The Navy and Marine Corps are conducting a broad review of security measures in the face of insider threats, following the incidents at Navy bases since Thanksgiving, including the Pearl Harbor Naval Shipyard and the NAS Pensacola fatal shootings. 

According to a memo, at a minimum, the stand-down should focus on the following:

• Command review of current physical security and Random Anti-Terrorism Measures (RAM) posture, with a critical eye on the Insider Threat.
• Command wide training on indicators of Insider Threat, actions necessary to deter and mitigate potential Insider Threats, and associated reporting requirements.
• Command wide review of Active Shooter Pre-Planned Responses (PPR).  Consider the execution of an Active Shooter drill or table top exercise of an Active Shooter event to validate these PPRs.

Acting Navy Secretary Thomas Modly says, "Execution of the security stand-down is directed to ensure that all of our sailors, Marines and civilians across all of our installations and commands are best postured, trained and informed to prevent future incidents of this nature."