In "The Leap," what literary device does the author use to put the past event concerning the blindfold trapeze act into the narrative?

What is interesting about this excellent story is the way
that the normal chronological narrative is something that is disrupted through the use
of flashbacks, which interrupt the narration of the story in the present and take it
back to an earlier point in the past, before rejoining the present later on. A flashback
is a literary device that is effective because it adds an emotional impact to the tale
and helps us understand a character's past, which thus sheds light on how they are and
why they are the way they are in the present.

In this
story, there are actually two definite flashbacks, which narrate the accident that cost
the mother the life of her first baby and then the second when the mother saved her
daugher, the narrator, when their house was burning. Both serve to help us to understand
the character of both of these important figures.