A trigger is any sensory stimulus (ex., a smell, a sound, a touch, a taste, or an image) from a traumatic event that has the ability to generate an uncontrollable, strong, and emotional response such as a flashback or a panic attack. Fragmented trauma memories are stored in the nonverbal brain without regard for time or context. For example, a person unexpectedly sees another wearing a red shirt and is immediately thrown into a flashback where he relives the tragic experience of seeing the blood-soaked shirt of a dying friend. Or, a loud, random sound can make a person dive for cover because he thinks he is being fired on by a drive-by shooter. When the story of an event is finally told with a beginning, middle, and end, these fragments of memory are put into the proper context. Then, they lose their power to be triggers and cease altogether.