Who will forget the bombings in Boston, or the Miracle on the Hudson, or the countless recordings of the meteor in Russia?
Each one marks stunning events forever documented by surveillance.
"Unfortunately things happen. And when things happen people think about it again," said PSI President Rick Osborne.
He said business has been off the charts; up 25 percent each year in the past two years, with his local clientele reaching 150.
He cited the importance with Hawaii's own shockers this week alone.
As if out of a movie scene, cameras watched the helicopter skidding down Fort Street and the gusher on Kapiolani taped just Thursday on traffic cameras.
"People want to look for things that are happening. I get it every day. I want to see the license plate," said Osborne.
Osborne said more businesses and homeowners are realizing the benefits too.
There was the smashingly bad heist at Zale’s in Waikele, or the homeowner that caught a wanna-be burglar lurking at her front door and around her house.
"I've had so many people say 'I can't understand why I haven't done it sooner,'" said Osborne.
He said it is commonplace to include software systems where users can view and control cameras from anywhere, even on a cell phone.
The National Guard just bought 10 portable surveillance units called the "shadow."
Right now, the city and county of Honolulu operates 350 surveillance cameras.
And the Department of Transportation has another 230 traffic cameras hovering city streets.
Osborne said their client list now includes everyone from the Honolulu Police Department, the Queens Medical Center and Iolani Palace to the Outrigger canoe clubs.
"If you're not doing anything wrong you have nothing to worry about," he said.