Awareness is a combination of the acuteness of your senses and your ability to correctly interpret what your senses are telling you. During game play, any tactical situation will usually involve the characters using their awareness. See Stealth.
To determine a character's awareness, roll 1D6 and add any species modifiers that may exit. This is your starting awareness. Each stage (10 skill) your character has will increase the awareness by 1. Also, stages in the following occupations will give a bonus in awareness: Sharp Shooter, Infantry, Diplomat, Leader, Scout and Lunatic.