The departure of the Marines follows the removal of hundreds of other National Guard soldiers who were part of President Trump’s deployment to Los Angeles.
The alert, issued to retired service members who served in Iraq or Syria and live in Florida, did not specify what kind of threat or which terrorist group was involved.
For years, Republican and Democratic administrations have dispatched civilian Pentagon officials and military commanders to the Aspen Security Forum in Colorado.
Ukrainian rescue workers carry the body of a victim of a Russian air bombing from an apartment building in Kramatorsk, in the Donetsk region of Ukraine, last month.
Ukrainian rescue workers carry the body of a victim of a Russian air bombing from an apartment building in Kramatorsk, in the Donetsk region of Ukraine, last month.
Ukrainian rescue workers carry the body of a victim of a Russian air bombing from an apartment building in Kramatorsk, in the Donetsk region of Ukraine, last month.
Ukrainian rescue workers carry the body of a victim of a Russian air bombing from an apartment building in Kramatorsk, in the Donetsk region of Ukraine, last month.