Special Agent Johnson (portrayed by Robert Davi) is an FBI agent who appears in Die Hard.
When he arrives with his partner - who is also called Agent Johnson (portrayed by Grand L. Bush) - in the Nakatomi Plaza, they tell LAPD deputy chief Dwayne T. Robinson they are now in charge. After Robinson gives the debrief of the situation regarding the number of hostages and terrorists, Special Agent Johnson states, "Sounds like a A-7 scenario." Police Sergeant Al Powell tells him and Agent Johnson about John McClane, since he is reason they know about the situation and that they facing less terrorists than before. Special Agent Johnson asked Robinson if he was a cop, as Robinson replied he's not LAPD.
He and Agent Johnson argue with Robinson and the power to shut down the building's power. The supervisor of the power company tells him it has to be done from downtown which will take out the 10 square block grid. Robinson objects about shutting down the grid since it's Christmas Eve. Special Agent Johnson forces the power company worker, Walt, to shut off the building's power or lose his job. After Nakatomi Plaza was shut down, Special Agent Johnson mused that the terrorists are scared now. When Powell sarcastically asked the FBI agents should they arrest them for not paying the electric bill, he and Agent Johnson say that they will let them sweat for awhile and give them the helicopters 'right up the ass'. Special Agent Johnson speaks on the cell phone to have the air support ready and have them fully armed. Afterwards, terrorist leader Hans Gruber checks in the radio, asking for the FBI. Special Agent Johnson takes the radio and lies to Gruber that the State Department has arranged for the return of his comrade-in-arms and that the helicopters are on route at his request. After Gruber tells him that they'll be ready, Special Agent Johnson says they will be ready to put Gruber in the bodybag, not knowing that Hans and his men are prepared to blow the roof.
Afterwards, He ride on the military helicopters to the roof of the building. As they we're flying to the building, Agent Johnson asked Special Agent Johnson the odds of the causality rate, Special Agent Johnson states if they take out terrorists, they lose 20 or 25 percent of the hostages. Agent Johnson replies to him that he can live with that. When they arrived, Special Agent Johnson yelled out in excitement that it is like the Fall of Saigon in the Vietnam, which Agent Johnson replied he was in junior high school. When they arrived in the roof, they see McClane shooting in the air to scare the hostages away. They mistake him for a terrorist and begin shooting at him. When they missed him, Special Agent Johnson orders the pilot to swing around, saying that he'll kill him. When the helicopter arrives, Special Agent Johnson has his sights on McClane and was ready to fire his Steyr SSG 69 sniper rifle. Before he can fire Hans detonates the roof. He and everyone in the helicopter are killed by the explosion.