So the scenarios should include: - static electricity - lightning - flame - puncture - midair collision - birds, flying fish - acts of war: projectiles,

So the scenarios should include: - static electricity - lightning - flame - puncture - midair collision - birds, flying fish - acts of war: projectiles, flames, jeers - solar flares; Carrington events; EMP - meteors, meteorites - combinations thereof; static + puncture, - chance presence of combustible gases and particulates; [grain dust,] + spark/static