sickness, opportunistic, weather changes, oncoming rushes of even more sickness, maybe even worse than flying, where 50 degree swings in ambient temperature are expected, especially when changing latitudes by 10-20 degrees. but i'm just getting over a seige, and need to replenish supplies, before I can draw up the drawbridge, and toss the invaders over the walls, or actually, more like let the dissenters on the inside of the walls run their course, kill them, and expel them. I just don't need another wave of invaders, aided by weather conditions.