HIGH LOW

(9:00) These excerpts from New Orleans native Jamie Bonck's home video show how, in just over four hours, the floodwaters came up through the first two levels of his three-story house on Aug. 29, 2005, the day Katrina made landfall. At one point, Bonck's camera captures a neighbor swimming along through the debris by his house.

The last minutes of this home video are shot from the boat that Bonck, and the neighbors he sheltered in his house, used to evacuate. The video shows the streets that have become lakes and the rooftops of houses that peek through the floodwaters. "[My] biggest thought is how quickly can the state and fed government come up with a plan to prevent it from happening again," says Bonck. "It's just going to be luck that it doesn't happen again."

Read FRONTLINE's interview with Jamie Bonck in which he talks about the storm and his indecision over whether to rebuild or tear down his house.