The planes are biplanes.
the biplanes have fixed wings 
there is smoke in the air close to the ground 
four red and white biplanes in the sky 
a wide open stretch of grass
a cloudy blue sky
a green grassy field
airplanes in teh sky
airplanes in the air
planes in the sky
planes in the air
planes creating a line of smoke
planes making a line of white smoke
four airplane sin the sky
planes creating smoke
airplanes making smoke
several small planes flying in formation over a green field and grass