The U.S. Navy plans to station armed guards at reserve centers across the nation.
The plan comes after a gunman killed four Marines and a sailor at a Navy Reserve Center in Chattanooga July 16, according to NBC News.
An email sent to Naval Reservists nine days after the attack says "VOLUNTEERS NEEDED IMMEDIATELY!" to provide "armed sentry watchstander duty" at Navy Reserve Centers beginning Aug. 17.
The Navy confirmed to NBC News that it plans to station armed personnel at all 70 reserve centers that are not located on military bases. The guards would be reservists called to active duty on an all-volunteer basis.
Read more about the attacks on Chattanooga military facilities