Security
Security is freedom from, or resilience against, potential harm (or other unwanted coercive change) from external forces. Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, and any other entity or phenomenon vulnerable to unwanted change by its environment.
Transport
Transport or transportation is the movement of humans, animals and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipeline and space. The field can be divided into infrastructure, vehicles and operations. Transport is important because it enables trade between people, which is essential for the development of civilizations.
Air
Darius was clearly of the opinion
That the air is also man’s dominion,
And that, with paddle or fin or pinion,
We soon or late
Shall navigate
The azure, as now we sail the sea.
John Townsend Trowbridge, Darius Green and his Flying-Machine.
