14. Fifty years ago in the court provided police officers grounds to execute stop and frisk actions without probable cause if they have a reasonable suspicion that the person has committed, is committing or is about to commit a crime and have a reasonable belief that the person "may be armed and presently dangerous." Two Supreme Court decisions in the 1980s elaborated on what is meant by "reasonable" and expanded the framework for today's legal foundation of when the use of deadly force is permissible by police and when it is not. A Illinois v. Wardlow B Terry v. Ohio C Graham v. Connor D Tennessee v. Stovall Next