The growing US military threat to Venezuela is spreading unease among Caribbean islands that depend on tourism to sustain their vulnerable economies.

ABC News' Sam Sweeney reports on the cancellations of flights in Venezuelan airspace amid a standoff between the U.S. and Venezuela.

A notice by the FAA cited the "worsening security situation and heightened military activity in or around Venezuela."

Jeff Bezos’ space company Blue Origin is potentially hours away from launching a massive rocket that will send twin probes to Mars. The high-stakes mission has deepened the company’s rivalry with Elon Musk’s SpaceX as the two compete for dominance in the commercial spaceflight industry.

A massive U.S. military buildup around Venezuela is drawing mixed reactions in nearby Puerto Rico, as Trump leaves a possible ground incursion on the table.