Man at San Francisco airport attacks 3 with 'edged weapon' arrested: police

If you need this many knives, you must be a lousy chef.

Man will find a way to kill each other. As part of a church project for one of our Sunday school programs I was asked to make sling shots David and Goliath style. Since I do leather work I researched the project and was able to produce 20 of them. With practice using tin foil compressed into a ball I could only sling it 20 yards, with a round stone I was able to reach 50 yards. With practice I should hit a man sized target. Tin foil or baby potato non lethal, round stone with some weight can be lethal.