How to use "tripods" in a sentence

They were turning their gun to fire on one of the tripods when it suddenly exploded

He hid behind a broken wall as one of the Martian tripods returned

And, shining in the morning light, three of the tripods stood on the common, their tops turning as they examined the damage they had done.

They stood now, harmless tripods of shining metal, against the brightness of the rising sun.