1 Subjects: “...unmanned aerial vehicles...”

2 Subjects: “...unmanned aerial vehicles (UAVs)...”

3 Subjects: “...unmanned aerial vehicle (UAV)...”

4 Subjects: “...unmanned aerial vehicle (UAV)...”

5 Subjects: “...unmanned aerial vehicles...”

6 Subjects: “...unmanned aerial vehicles...”

7 Subjects: “...unmanned aerial vehicles...”