"We have them! We have them!" exulted Joe, in a whisper.
They were silently considering how best to surprise and capture the two men, who were still unaware of the presence of the boys, when a sudden noise came from outside. Blake and his chums, as well as the two men, started.
"That was not the wind!" exclaimed Secor.
"No, my friend. It was not. I think there is some one here besides ourselves. We must look. I——"
And then came a guttural command in German:
"Surrender—all of you! You are surrounded and are prisoners! Surrender!"
CHAPTER XXIII
THE AIRSHIP RAID
Surprise on the part of Blake and his chums, as well as on the part of Secor and Labenstein, was so complete that it would be hard to say who felt the sensation most. The moving picture boys, after danger and difficulties, had found the stolen army films and those they believed had taken them. They were about to make a dash and get not only the precious boxes, but also, if possible, capture the two plotters, when, like a bolt from a clear sky, they were themselves called upon to surrender.