My guess is that a pandemic will be developed in a lab somewhere and then turned out against a people. All commerce and travel will cease. Society will then completely break down with marauding bands killing for any food that can be found. If it is know that you are LDS you will be targeted. If a righteous people were to be preserved from this they would need to get out and gather before the pandemic is released, which is what tend to think will occur. See Revelation 18:4 Only in the last year or so have these thoughts taken hold. I feel deeply that something is coming, both great and terrible. I have sold personal belongings to raise capital to purchase things I would use; grain mill, cold weather clothing, food storage, ammo, things i don't expect to be available during the times of trial.