Emotional accounts from relatives of the victims and survivors of the partial collapse of a boat dock gangway on Georgia’s Sapelo Island and a newly released video of the frantic rescue efforts paint a dramatic picture of Saturday’s incident.

As state officials investigate what caused the Sapelo Island dock collapse, there are questions surrounding the gangway’s construction and how many people it should have supported.

The incident is already being investigated by the Georgia Department of Natural Resources and the Georgia Bureau of Investigation.