planes flying in the sky
gray sky covered in clouds
one plane on top of another
two planes in the sky
one plane flying above another plane
sky is covered in clouds
a government jet is flying in the air
the shuttle is on the jet
the shuttle is piggybacked onto the jet
the shuttle is being transported
a nasa plane in flight
A plane carrying another plane
2 planes in flight
big airplane flying in sky
gray and cloudy sky 
big white airplane with a blue line
blue line in white airplane
two white big wheels of airplane
big commercial airplane 
a large plane flying through a cloudy sky