Some carry raw materials, some carry blueprints, some are the actual construction workers.
In Brazil, a new young economic team takes office today carrying blueprints of free-market reforms intended to turn the nation into an economic world power in this decade.
Local builders used just two or three basic house designs, so Grant and his colleagues carried blueprints in their heads.
The company is still months away from carrying final blueprints to local officials, but the plans drawn up so far offer a broad outline of what may rise on the land over the next 25 years.
Those who grew up with a local Woolworth's or family-operated five and dime often carry indelible blueprints in their mind's eye.
At one point, he was lowered by rope to the B2 level in a a parking garage near Liberty Street, carrying floodlights and blueprints, and wondering whether the equipment being used over his head would cause shaking or punch through a floor slab.
In 1999, India impounded a North Korean ship of the Kandla coast that was found to be carrying missile components and blueprints.