SUMMARY. This needn't take long, but it should be very good. It should leave the audience with (1) a fresh overall impression of the points you've just developed, (2) a good idea of what you plan to do next and why, and (3) two or three good questions.

Finally, don't spend too much time on detailed acknowledgements. There's been a recent tendency to separately mention everyone and every agency, but this can use up a lot of time in a short presentation. It's fine in a 45-minute or 1-hour talk, but not such a good idea in a short one.