Mindset (Oxford Dictionary) is the established set of attitudes held by someone: "the region seems stuck in a medieval mindset", a habitual or characteristic mental attitude that determines how you will interpret and respond to situations, the thought processes characteristic of an individual or group.
Unaware – These are times when you are asleep, watching TV, occupied with a specific task (for example when I’m writing this) and daydreaming.
Aware – You are conscious of your surroundings, cognizant of those around you, have mentally identified potential threats and where they may emanate from.
Alert – A specific potential threat or threats have been identified; this is a heightened state of awareness.
Alarm – Whatever action was planned in the alert level is now implemented. Again, taking action does not necessarily mean using force.
Maintaining Awareness – It is difficult to maintain a heightened level of awareness for great length of time, particularly in your own home, which is considered a sanctuary from the outside world. Make a conscious effort to remain alert to your environment, whatever it is.
Below is a link for a watered down (practical everyday person) OODA loop.