A communications failure shut down Greece’s skies on one of the busiest travel days of the year, exposing long-standing weaknesses in air traffic control, overwhelming airlines and airports, and leaving thousands of travelers scrambling for answers

Flights to and from Greece were temporarily halted, while only aircraft already airborne were being handled under contingency procedures.

Four Turkish aircraft - a surveillance plane, a UAV and two helicopters - were recorded as engaging in Greek airspace violations on Thursday

Impressive Ramstein Flag videos show Alliance warplanes practicing for combat situations over Greek skies; Turkish air force absent after snubbing Athens FIR regulations

Press report in Athens quotes military source as saying F-16s scramble to ID Russian planes flying from Syria to Libya through southern-most part of Athens FIR