WATCH: MBTA Releases Footage Of The Red Line Derailment

The MBTA on Friday evening released footage of the June 11 Red Line derailment that has affected service on the line for more than a month.

The derailment occurred just outside the JFK/UMass Station at 6 a.m. on a Tuesday.

The T released two videos — both about 3:30 long. And in both you can see the derailment, and what looks like a big flash, at about the 1 minute mark.

The MBTA released the videos on the same day it announced a target date of Aug. 15 for signal restoration between Broadway and JFK/UMass stations, what the T says would be "a critical milestone in the effort to return the Red Line to normal service."