According to a statement by Secretary of Defense Lloyd Austin, "Today, at President Biden's direction, U.S. military forces conducted self-defense strikes on two facilities in eastern Syria used by Iran's Islamic Revolutionary Guard Corps (IRGC) and affiliated groups." The attacks were reportedly done by US warplanes, likely operating out of either the Gulf or Mediterranean areas where new US naval assets have recently been positioned, keeping a watch on fast moving events in Gaza. Fox issued the following breaking detail: 

F-16s and F-15s were used to strike targets in Syria earlier tonight in retaliation for the attacks on US troops in the region.

Earlier in the day there were reports, though with few details, that US forces in the same northeast region of Syria came under attack, as has been happening in the last several days. The Pentagon had also earlier announced that over a dozen US troops in Iraq and Syria have suffered Traumatic Brain Injury (TBI) in the aftermath of drone and rocket attacks on US bases in the region.