And the airport is always open to change: After a family with a disabled son suggested upgrades, the airport recently added adult changing stations to its family bathrooms.

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Many child changing stations are inside the female lavatories so I had to carry a tarp and often change him one-handed when there was no surface to work with.

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The ambulance service ran a public consultation in 2012 on the future of the existing infrastructure, changing from 65 stations and replacing them with 13 large hubs and 118 community ambulance posts.

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Changes are afoot and the character of the stations is changing.

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But Bigelow argues the balance of risk and reward is changing with low-cost private rockets and his own inflatable space stations, which could be modified for surface use.

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