By great good fortune, Frank had landed clear of a river, although within a hundred feet of the bank. Looking in that direction, he was horrified to see Bart in the water, struggling amid the envelope and ropes of the parachute. He was so badly entangled that it was almost impossible for him to swim, and already his efforts were growing weaker. Leaping to his feet, Frank rushed toward the stream, calling words of encouragement to his friend as he went. "Hold up, Bart!" he yelled, "I'll be with you in a minute." Reaching the river bank, he paused only long enough to kick off his shoes, and then plunged in to the rescue of his friend. With powerful strokes he plowed through the water, and was soon alongside Bart, who by this time was in sore straits. Frank drew his knife, and with a few swift strokes cut away the wreckage of the parachute in which Bart was entangled. "Thanks, old man," gasped the latter. "You came just in the nick of time, this time. Two minutes more, and I'd have been done for." "Thank Heaven I did get here in time," said Frank fervently. "Just rest your hand on my shoulder, Bart, and I'll tow you to shore. It's lucky this river isn't as wide as the old Hudson, isn't it?" Fortunately Frank was a powerful swimmer, and it did not take him long to reach the bank. He and Bart crawled up to dry land, and threw themselves panting on the ground to recover from their late misadventures. But a moment later, Frank was on his feet once more. "I forgot all about Dunton, the observer!" he exclaimed. "He may have landed in the river, too, or he may be injured and in need of help. Do you feel fit enough to help me look for him, Bart?" "Oh, I'm as good as ever now," said Bart, with an attempt at a grin. "Guess I must have been born to be hung, because I don't seem to be able to get myself killed by any other method." The boys set out on their quest, and were soon delighted to see the observer himself limping toward them. The latter caught sight of them at the same time, and waved his hand to them. "Gosh, but I'm glad to see you!" he exclaimed, when they came within speaking distance. "I was afraid you'd both gone under, and if you had I'd never have forgiven myself for taking you up with me." "We were just starting out to look for you," said Frank. "Where did you land?" "In a good soft place," said the other. "The branches of a big tree. My ankle caught in a branch and got wrenched a little, but otherwise I'm O.K." "I landed in the river, and Frank had to fish me out," said Bart. "But now that we're all safe, I'm beginning to wonder just where we are. The storm seems to be over, and I guess it's up to us to get back to camp as soon as possible, or they'll have us down as A.W.O.L." "I'm not sure just where we are," responded Dunton, "but I hope we haven't landed among the Huns. They'd like nothing better than a chance to put us out of the way."