When members of the US presidential administration travel, their trips require more than booking flights and a hotel.

Multiple security departments send scores of agents to protect the traveling official, and the Secret Service often visits cities months ahead of time to nail down logistics.

The layers of security, aides, and press that insulate top government officials during such trips has been called an "imperial bubble."

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When the top members of a sitting presidential administration travel, they do so within what The New York Times once described as an "imperial bubble."

The collective of press, security, and aides that surround top members of the administration during their time outside of Washington, DC follow carefully designed guidelines to ensure a safe and efficient trip.

From the White House to ritzy hotels and high-profile appearances across the world, this is what it's like inside the "imperial bubble."