This photo, taken by the US Air Force, shows an FBI SWAT team conducting a hijacking exercise at Keesler Air Force Base.

Which phrase best describes the markings on the fire truck?

Вариант ответа 1 - a) unit seal

Вариант ответа 2 - b) body number

Вариант ответа 3 - c) team name

Вариант ответа 4 - d) all of the above