Im just wondering whether UA owns those inter-terminal tanks(aka shuttles) at IAD or are they owned by the airport.

Im only asking because those things look costly to run and maintain.

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God Bless America West and British Airways

HP - Platinum/800k miles
BA - Dirt/Soon to be Gold
NW - Dirt/Soon to be Plat
UA - Dirt/19k miles
AA - Dirt/Only using to get BA Tier points/miles.