Scene Size Up BSI….. Really?

The terms scene safety/size up & BSI are said during every skills testing station and is usually part of a question in every EMS exam. But is it just a mantra we say over and over for testing purposes or do we really think about it? I mean really. This week I utter a few words on this topic and would love to hear your scene safety/size up tips and ideas that keep you safe and on track.