(FILES) This file photo taken on December 31, 2015 shows an Israeli UH-60 Black Hawk taking part in an air show for a graduation ceremony at the Hatzerim base in the Negev desert, near the southern Israeli city of Beersheva. Poland, which last week announced the abandonment of the contract on the Caracal helicopters with Airbus announced on October 10, the coming acquisition of Black Hawk aircraft to equip its special forces. / AFP PHOTO / JACK GUEZ