I actively track two. The other one is when ALL the missionaries are called home.
When the testimony of the Elders ceases to be given, and the Lord says to them, “Come home; I will now preach my own sermons to the nations of the earth,” all you now know can scarcely be called a preface to the sermon that will be preached with fire and sword, tempests, earthquakes, hail, rain, thunders and lightnings, and fearful destruction. What matters the destruction of a few railway cars? You will hear of magnificent cities, now idolized by the people, sinking in the earth, entombing the inhabitants. The sea will heave itself beyond its bounds, engulfing mighty cities. Famine will spread over the nations, and nation will rise up against nation, kingdom against kingdom, and states against states, in our own country and in foreign lands; and they will destroy each other, caring not for the blood and lives of their neighbors, of their families, or for their own lives.
~Brigham Young