Washington Pattern Jury Instructions–Criminal (W.P.I.C.)
Part IV. Defenses Chapter 16. Justifiable Homicide
WA W.P.I.C. 16.07 Justifiable Homicide—Actual Danger Not Necessary
A person is entitled to act on appearances in defending [himself][herself][another], if that person believes in good faith and on reasonable grounds that [he][she][another] is in actual danger of great personal injury, although it afterwards might develop that the person was mistaken as to the extent of the danger.
Actual danger is not necessary for a homicide to be justifiable.