“Looks that way–that’s all I can say, Perk. Now lie low and don’t do any talking, though with their crate kicking up all that row I reckon there’d be small chance of their hearing us even if we shouted.”

Perk was chuckling to himself at a great rate and could not keep from taking advantage of the invitation Jack had really extended to say:

“Yeah! an’ I kinder guess now we got one thing they ain’t, which is a silencer on our engine that’ll keep it muzzled, even if it does knock off a bit o’ our speed when we happen to use it. Luckiest thing ever you managed to get the Big Boss to send us such a bully contrivance that seems to work jest great. Listen to the racket they’re kickin’ up right now–enough to tell any chump ten miles off a crate’s headin’ his way. Jerusalem crickets! but ain’t I glad we’re fixed as we are.”

The ship far up in the heavens was almost directly over them by this time and Perk relapsed into silence, being vastly interested in watching it passing over.

Possibly he had his eyes glued on the figures–there were two occupants in the Robin’s cabin he could easily see–leaning over and doubtless closely scrutinizing the intricacies of the ragged shoreline below, hoping to make important discoveries.

If the leading figure, piloting the craft, was actually Oscar Gleeb, onetime noted Hun ace over in the Argonne, it might be Perk, with his past war history rising up to thrill him afresh, may have found himself half expecting to hear a terrific explosion close by on the shore as the German flier let drop some sort of bomb, with the idea of striking their concealed bus which his keen eyes might have detected despite their wonderful camouflage.

But nothing like that came to pass and the cruising ship kept moving in a northerly direction, growing less distinct as miles were being covered at the fast clip it swept along.

“Cripes! that was worth somthin’ to glimpse, bet your sweet life, partner,” Perk finally observed as he ventured to make a little movement, feeling dreadfully cramped and the danger of discovery growing momentarily less as the first shades of coming evening began to gather around the secluded cove. “Jest as like as not they started away down toward the tip o’ the mainland, an’ hev been examinin’ every mile o’ the coast, bent on doin’ a clean job while they’re at it. An’ if they meet up with no luck mebbe now they’ll make up their minds it was only a false alarm, and let her go at that.”

Presently they could no longer glimpse the faintest sign of the scout plane–when last seen it was still heading up the coast as though making for some destination where action awaited the members of its daring crew.

“The passing of that crate settles one thing, anyway,” observed Jack presently.