DLR is a copism for "don't look right". http://abclocal.go.com/wls/story?sectio ... id=5478651 http://www.lineofduty.com/content/view/88735/1/ Iowa laws: 704.1 Reasonable force. "Reasonable force" is that force and no more which a reasonable person, in like circumstances, would judge to be necessary to prevent an injury or loss and can include deadly force if it is reasonable to believe that such force is necessary to avoid injury or risk to one's life or safety or the life or safety of another, or it is reasonable to believe that such force is necessary to resist a like force or threat. Reasonable force, including deadly force, may be used even if an alternative course of action is available if the alternative entails a risk to life or safety, or the life or safety of a third party, or requires one to abandon or retreat from one's dwelling or place of business or employment. 704.3 Defense of self or another. A person is justified in the use of reasonable force when the person reasonably believes that such force is necessary to defend oneself or another from any imminent use of unlawful force. 704.10 Compulsion. No act, other than an act by which one intentionally or recklessly causes physical injury to another, is a public offense if the person so acting is compelled to do so by another's threat or menace of serious injury, provided that the person reasonably believes that such injury is imminent and can be averted only by the person doing such act. 704.6 When defense not available. The defense of justification is not available to the following: 1. One who is participating in a forcible felony, or riot, or a duel. 2. One who initially provokes the use of force against oneself, with the intent to use such force as an excuse to inflict injury on the assailant. 3. One who initially provokes the use of force against oneself by one's unlawful acts, unless: a. Such force is grossly disproportionate to the provocation, and is so great that the person reasonably believes that the person is in imminent danger of death or serious injury or b. The person withdraws from physical contact with the other and indicates clearly to the other that the person desires to terminate the conflict but the other continues or resumes the use of force.