Ah, nurses. In every accident department there is at least one really tough staff nurse. In the hospital in which I worked she was called Edna. One Friday night a youth came in, pulled a knife and started making threats. The police were called, but were reluctant to tackle him. Edna returned from treating a patient, declaimed, 'I'm not having this,' strode up to the youth and shouted 'Don't be so stupid. Give me that right now.' To everybody's surprise he did so and was meekly taken into custody.