Tell me which of the following circumstances warrant calling 911: fridge runs out of food, micro kitchen runs out of slacks, someone gets hit by a car, a child is drowning in a public pool, your saving account runs out of money, someone carries assault weapons into campus.

Given the listed circumstances, you should call 911 immediately when someone gets hit by a car, when a child is drowning in a public pool, or you see someone carrying assault weapons on campus.