Tom Schoenitz,30,was working on a roof in Salzburg when he bumped into a colleague who was holding a nail gun.

• 那天，30岁的汤姆·斯科伊尼特正在萨尔茨保一所房子的屋顶工作。突然他的同事来访，当时斯科伊尼特的手中正拿着一支钉子枪。