“Ambush” and “Facing It” include a flashback about an even.
Flashbacks may be defined as interruptions that writers do in order to insert past events, seeking to provide background or context to the current events of a narrative.
Flashbacks are useful to allow the readers to gain insight into a character’s motivations, and provide a background to a current conflict. For example: dream sequences as well as memories are used to present flashbacks in a story.