Which of the following is part of the federal government's imminent danger standard for use of deadly force?
1) The suspect must pose an immediate threat of death or serious physical injury to the officer or others.
2) The officer must have probable cause to believe that the suspect has committed a crime involving the infliction or threatened infliction of serious physical harm.
3) The officer must give a verbal warning before using deadly force, if feasible.
4) The officer must use all available non-lethal alternatives before resorting to deadly force.