9 They also had thoraxes like breastplates of iron, and the sound of their wings was like the roar of many horses and chariots rushing into battle.  That sounds like a tank. Or an airplane. I suppose an airplane might resemble an insect to an ancient person, moreso than a tank.  10 They had tails with stingers like scorpions, which had the power to injure people for five months.  That sounds like a missile truck with a nuclear warhead.