British slang, the kind you hear in crime dramas: to get weapons, to arm yourself. Almost always as 'tooled up' — 'they came tooled up'. 'Tools' here is slang for weapons. You will hear this on screen far more often than you should ever need it in life. A business meaning also exists — a factory 'tools up' when it installs the machines to make a new product — but that one lives in business news.

帶傢伙、武裝起來（英式俚語）