ISBN-13: 9781515398844 / Angielski / Miękka / 2015 / 76 str.
A pall of smoke, dark, ugly, threatening, hung over a wood in which the Thirty-ninth Troop of the Boy Scouts had been spending a Saturday afternoon in camp. They had been hard at work at signal practice, semaphoring, and acquiring speed in Morse signaling with flags, which makes wireless unnecessary when there are enough signalers, covering enough ground.