Air superiority exists when operations can be conducted at a given location for the desired duration without effective interference by adversary air power and/or air defence capabilities.
When control of the air is not achieved, one of the following two categories will apply:
a. Air parity. Air parity exists when control of the air is being contested and no force has been able to obtain an air power advantage and/or air defence dominance over another.
b. Unfavourable air situation. An unfavourable air situation exists when operations can expect to encounter prohibitive interference from adversary air power and/or air defence capabilities.