The policies are a result of a review of vetting procedures for foreign students started after the shooting at NAS Pensacola.

The troops' courageous acts were highlighted by U.S. Attorney General William Barr this week.

Esper will provide Naval Air Station Pensacola leadership with a preview of new security measures being developed.

The Saudi who killed three at a Florida Navy installation was inspired by jihadist ideology, the U.S. attorney general said.

Acting Navy Secretary Thomas Modly said the service must learn from the recent attacks at three federal installations.

The letter comes after Saudi national Mohammed Saeed Alshamrani opened fire in a classroom on December 6.

The screening apparently failed to turn up Alshamrani's exposure to jihadist ideology before coming to the U.S.

Navy leaders called the move "right and fitting."

The Pentagon has paused its training in the U.S. with Saudi nationals until officials conduct a thorough review.

A safety stand-down and operational pause began Monday for some 175 Saudi Arabian students at Naval Air Stations Pensacola.