Those of you who've been to Hollywood Studios and taken the Back Lot Tour know they use audience participants. Jessica was chosen to take part in the Harbor Attack video. They have the particpants pretend to do different things. Then they add a background video to it and show it.
Jessica with the other volunteers.
Ready for action.
Pretending to talk to the ship
1,000 gallons of water from the tank to the right (you can't see it in these photos) hits her.