I'll be homesick when you two leave."

"Perhaps we won't leave -- yet." Avella smiled enigmatically. "Papa
is willing for us to stay. At first I was going with him; but he says
Andra and I would need each other to keep from getting homesick."

"Look, look!" Andra was gazing through Buck's glasses at the
approaching planes, which had a strange look as they flew at tremendous
speed in V formation. "What if they should not be friendly?"

Just then Blaine closed his own glass for he saw flyers coming on the
run.

"Are you two all right?" he called to the boys. "All our best men are
off on the daily run over the Boche trenches. I cannot think how these
fellows got by. Get down to the hangars, if you feel strong enough. I
may have to go up myself . They're making straight for us."

The girls were looking on in wonder, whereat Byers turned to them.

"You better get into the bomb-proofs," he said. "Your father's yonder."

The Senator was seen hurrying from one of the buildings towards them.

Both the aviators, seeing, Erwin and Brodno on the run, joined them and
hastened on down to where mechanics were trundling out a number of
machines upon the smooth level that was the starting point nearest.
With a word to the Senator, Byers followed, while the girls both waved
their handkerchiefs. Said Andra to her sister: