Some interpreters have added responsibilities. The English booth, in particular, which is normally in direct contact with both chairman and Secretary of a meeting must be mindful of any problems their colleagues in other booths may encounter. Pivots, on their part, have a special responsibility vis-à-vis their colleagues, who are, after all, their most vulnerable users. Regardless of the difficulties he may have with the original, it is the pivot's responsibility to ensure that his colleagues will be spared a halting, incoherent speech. A pivot who does not interpret with those who must relay from him primarily in mind is wanting both as an interpreter and as a colleague.