Before we get too far sidetracked ... you might want to note that the intelligence business is neither dangerous nor glamorous, it involves, for 99.99% of its practitioners, careers of unending drudgery, sifting and sorting information until some meaningful patterns might materialize.
It should be pointed out that CSIS agents do carry firearms (1) and, in fact, do not even have the powers of arrest. To arrest someone, they call in the RCMP.
(1) An exception was for CSIS agents operating in Afghanistan.