Recent attacks on US military bases in eastern Syria:

Al-Mayadeen: Shortly after the US attacked two sites in Al-Mayadeen and Al-Bukamal in eastern Syria, an American military base in the Koniko field, Syria, was attacked by multiple rockets, and the US base in Al-Shaddadi, Syria, was attacked by drones. 4 American soldiers were killed and several others were injured."

https://english.alarabiya.net/News/middle-east/2023/11/13/Hezbollah-s-Mayadeen-Strikes-target-US-bases-in-Syria-in-response-to-American-attack