For the first time this year, a Chinese fighter jet has been spotted on the runway of an artificial island created by China in the South China Sea.

The Asia Maritime Transparency Initiative (AMTI), which is part of the larger think-tank, Washington’s Center for Strategic and International Studies, reports that a Chinese J-11 fighter was visible on the runway of one of the artificial islands China has produced to extend their claim over the heavily traversed waterway in satellite images taken on March 29th.

This new deployment comes only days before China’s President Xi Jinping arrived in the United States to meet with President Donald Trump at his Mar-a-Lago retreat in Florida.  The much-anticipated summit is expected to be a fairly contentious one, as President Trump and key members of his staff have been quite critical of Chinese trade practices and their continued effort to assert their will over the South China Sea.

“This isn’t a first, but it’s the first time in a year,” AMTI director Greg Poling said of the fighter deployment. “There are likely more [fighters] in the hangars nearby.”