a bunch of planes are flying
smoke from the plane
the clouds are white
planes flying in front of clouds
group of planes in front of clouds
group of planes in a white sky
seven red and grey planes
planes flying in a group across the sky
The sky is blue.
The sky has clouds.
Planes flying in the blue sky.
The blue sky is clear.
seven planes in the sky
jets flying in formation
jet in the sky
planes flying at an air show
grey and red jets
jets flying in the air in a formation for an air show
military aircrafts are flying 
aircrafts flying in a blue sky
flying in formation
a tight formation
a formation of airplanes flying under a blue cloudy sky