The shofar-blower must also have intent to dispatch the community's mitzvah obligation. Plus, a mishnah that describes the Israelites' successful war against Amalek, and what causes what. Plus, the serpent on the banner. Plus, praying for the sick. And then back to halakhah, and who can blow shofar for others? Also, opening the 4th chapter: the difference between how the shofar was blown in the Temple and elsewhere, the difference between how the shofar was blown on Shabbat (or not). Specifically, R. Yochanan ben Zakkai's decrees, and the way he implemented them.