Sentence:  Many jihadist plots have been foiled and the security <WSD>apparatus</WSD> is getting better, overall, at pre-empting those who would do us ill. But, they say, the nature of the threat and the terrorists' increasing use of low-tech, asymmetrical tactics such as hire vehicles and knives, make it all but impossible to stop every assault. 
Meaning of the word marked with <WSD> tags:  The entirety of means whereby a specific production is made existent or task accomplished.