"Every day you open up a newspaper and there's another shooting in a school, church, courthouse and I feel responsibly to be prepared for that," said Special Agent Ben Finkelstein.
Fresh off a plane from Washington D.C, Special Agent Finkelstein and Special Agent Christopher Deedy talked about why Finkelstein has carried a gun, every day, for the past five years.
"I said a firearm is like a pen. I walk through every day with a pen in my pocket, because I may need to write something and some days I may not, but it's there in case I need it," said Finkelstein.
Finkelstein, with relatives on the island and a positive view on Hawaii life, also warned Deedy about being seen as an outsider.
"I made the distinction between haole and FN-haole, which was used in a derogatory way likened to the 'N word,'" said Finkelstein.
"He mentioned that with the information I'd given him about for potential of incidents in this environment, that he intended to carry a firearm from that point," said Finkelstein.
"The only word that sticks out is haole," said McDonald's customer Michel Perrine.
That very next morning, after partying with friends, Finkelstein's earlier advice appeared to be put to the test. With drunken patrons at a Waikiki McDonald's, including Kollin Elderts and his friend Shane Medeiros, coming together in all the wrong ways.
"I could see someone standing up to say something, but to shoot somebody, I didn't see a reason," said Perrine.
Perrine says, despite Elderts' words to him, he doesn't remember feeling threatened.
He was surprised when Deedy and Elerts clashed -- the image of Deedy flapping up his shirt, exposing his gun. That was the last thing he remembers until it was over.
"I didn't know what to do. It was more the shock of seeing something go from an argument to the end result," said Perrine.
Perrine admitted he had three shots of tequila and a pitcher of beer that night. He said he didn't even remember the fight or the shooting until another witness told him about it later that morning.