You were with Ellie in Santabarbra looking for Abby when Rattlers attacked. You both got free safe and sound and killed the rattlers when one was willing to give up information on Abby’s whereabouts.

Ellie: Talk.

Rattler: we keep ‘em in a tall round building.

Ellie glances back at you before looking back to the rattler

Rattler: I swear.

Ellie raises her gun ready to shoot