1.   Police helicopters, navigating their way through thick black flows of smoke, plucked terrified guests from the hotel roof.

2.   Police helicopters, navigating their way through thick black smoke, plucked terrified guests from the hotel roof.

3.   Three police helicopters, navigating their way through thick black smoke, plucked terrified guests from the hotel roof.

4.   Three police helicopters navigated through a thick plume of smoke and plucked terrified guests from the hotel roof.