In stanza 8 the narrator describes a spark coming from the horse's hooves hitting the street. What is meant by the lines "and the spark stuck out by that steed in his flight/kindled the land into flame with its heat?"

As the boys sleep, military airplanes battle fiercely above the island. none of the boys sees the explosions and flashes in the clouds because the twins sam and eric, who were supposed to watch the signal fire, have fallen asleep. during the battle, a parachutist drifts down from the sky onto the island, dead.