Revelation 9:9

Overview - Revelation 9
1	At the sounding of the fifth angel, a star falls from heaven, to whom is given the key to the bottomless pit.
2	He opens the pit, and there come forth locusts like scorpions.
12	The first woe past.
13	The sixth trumpet sounds.
14	Four angels are let loose, that were bound.

Revelation 9:9  (King James Version)
And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.