A U.S. Air Force RC-135V Rivet Joint conducted a highly unusual flight in the Gulf of California yesterday, between Mexico’s Baja Peninsula and the rest of that country, according to online flight tracking data. The strategic intelligence, surveillance, and reconnaissance (ISR) plane looks to have done the same today. The Rivet Joint is one of America’s most capable intelligence-gathering assets and the appearance of one off the Mexican coast is a significant development. This comes amid a major increase in U.S. military support for operations along the border with Mexico under President Donald Trump and talk of unprecedented direct action...