When was the last time a cuban jet overflew the U.S.?
A couple in the 90s i think are the most recent.
Here’s a few examples. We didn’t shoot at either. Short of open war, seeing an aircraft stray into your space is never justification alone to open fire.
http://www.nytimes.com/1993/09/24/world/another-cuban-fighter-pilot-defects-to-the-us-in-a-mig.html
I recall a few airplanes from America within recent memory being shot at/down by the Cuban government for “straying” into their sovereign airspace.