I hope to be transferred to the American air service as soon as possible, returned the smiling Don Hale.
These ingenious air service men do all their repairing on the spot.
But, in the air service, we have a program that I believe will be more to your liking.
The commanders of the air service did not hesitate to take the risk.
Supply tanks, machine-shop tanks, ground forces of the air service, concentrate here!
How many atmospheres were there for the air service to conquer?
The air service has its own advantages, its own trials, and its own marks of distinction.
You know that his record in the air service has been almost perfect.
It has created an air service which, in efficiency and in number of machines, is unequalled.
Just at this period the supremacy of our air service was hardly ever disputed.