Mobile phone showing a screensaver with time and dateMobile phone showing a screensaver with time and date
The refueller refuels two helicopters in the air at the same timeThe refueller refuels two helicopters in the air at the same time
Unmanned aerial helicopter with real-time video shootingUnmanned aerial helicopter with real-time video shooting
The hands of an old clock stopped at a certain timeThe hands of an old clock stopped at a certain time