airspace boundary in a sentence

1. Turkish and Greek planes frequently violate each other's airspace, partly due to disagreements over airspace boundaries.
2. Military jets from both countries frequently violate each other's airspace, partly due to disagreements over airspace boundaries.
3. He said a continued airspace boundary dispute with neighboring Turkey obliged Greek pilots to follow intense training schedules.
4. Turkish and Greek planes frequently violate each other's airspace, partly due to disagreements over where airspace boundaries should be drawn.
5. NATO members Greece and Turkey are at odds over sea and airspace boundaries in the Aegean, as well as war-divided Cyprus.
6. It's difficult to find airspace boundary in a sentence.
7. Greek pilots carry out frequent training exercises for patrols over the Aegean, where there are disputed airspace boundaries between Greece and Turkey.
8. Greek and Turkish fighter jets frequently violate each other's airspace _ partly due to disagreements over airspace boundaries _ and engage in mock dogfights over the Aegean.
9. Greek and Turkish fighter jets frequently violate each other's airspace _ partly due to disagreements over airspace boundaries _ and engage in mock dogfights over the Aegean Sea.