Websites, monitoring airspace and air traffic, publish data, according to which the US Navy sent its anti-submarine patrol aircraft to the western air borders of the Syrian Arab Republic. We are talking about the P-8 Poseidon.
Materials indicate that, that first "Poseidon" (AE6863) traveled south of Cyprus over the Mediterranean Sea to the air borders of Lebanon, then turned north, passing practically along the entire Syrian coast. At the same time, the American plane deviated, what is called, away from the borders of the SAR in the area of the location of the Russian military base Khmeimim in the province of Latakia.
Then, for quite a long time, he circled a few tens of kilometers from the air borders of the SAR - in the area of the logistics center (MTO) Russian Navy Tartus.
Other sources claimed, that at the moment two American planes could fly to the shores of Syria. There are no official reports at the moment..
It can be assumed, that an american plane (or planes) specifically interested in Russian military facilities on the coast of the Syrian Arab Republic.
Boeing P-8 Poseidon aircraft are capable of carrying up to 9 tons of various weapons, including small 324mm Mark torpedoes 54.
Earlier, the United States considered the possibility of withdrawing its contingent from Syria. It was stated, that the United States does not intend to completely scale down its air force presence in the Syrian direction.