Iowa Code § 708.6: Intimidation with a dangerous weapon.

1. A person commits a class “C” felony when the person, with the intent to injure or provoke fear or anger in another, shoots, throws, launches, or discharges a dangerous weapon at, into, or in a building, vehicle, airplane, railroad engine, railroad car, or boat, occupied by another person, or within an assembly of people, and thereby places the occupants or people in reasonable apprehension of serious injury or threatens to commit such an act under circumstances raising a reasonable expectation that the threat will be carried out.

2. A person commits a class “D” felony when the person shoots, throws, launches, or discharges a dangerous weapon at, into, or in a building, vehicle, airplane, railroad engine, railroad car, or boat, occupied by another person, or within an assembly of people, and thereby places the occupants or people in reasonable apprehension of serious injury or threatens to commit such an act under circumstances raising a reasonable expectation that the threat will be carried out.