Versions of Iowa Code 704.2B - Use of deadly force -- duties -- evidence on LawServer 2023 Iowa Code 704.2B – Use of deadly force — duties — evidence 2022 Iowa Code 704.2B – Use of deadly force — duties — evidence. 2020 Iowa Code 704.2B – Use of deadly force — duties — evidence. 2018 Iowa Code 704.2B – Use of deadly force — duties — evidence.