AA correspondents quote local sources as saying that the Harir airbase has seen in increasing air traffic and preparations.
The Harir has been a major airfield for coalition forces since the 2003 invasion of Iraq and there are reports of further expansions in recent years.
US President Donald Trump announced last week that he will withdraw his country’s nearly 2,000 soldiers from Syria.
AA reports that its correspondents have observed growing cargo and helicopter traffic around the Harir Base.
