ALT Teal demolition grapple on an excavator arm, jaws open against a deep blue sky.

ALT Close-up of a weathered yellow rock-cutting head studded with rows of conical carbide picks, like the legs of an insect larva.

ALT A long row of open missile tube hatches along a submarine hull, red interiors ringed with blue pipework and machinery.

ALT Four scorched rocket nozzles set in a silver plate at the tail of an orange rocket plane, against a black background.