Descr1: 1. A cargo hook drops a shipment on the ground
  2. The helicopter freezes in the air 
  3. The propeller of the helicopter turns off
  4. The helicopter is still floating in the air
Descr2: 1. A military helicopter is flying in place in the air
  2. A game alert banner pops up at the top of the screen
  3. The helicopter's rotor blades stop rotating
  4. The helicopter flies in place in the air with stationary rotor blades