described how he saw two SWAT officers carrying a fellow officer through the hallway and back out of the house.       "He appeared to be limp, and he wasn't moving," Quinonez said. "I knew I lost a partner and a friend."       
Rialto police have said they raided Wiggins' apartment, which  he shared with a girlfriend and three children, because they suspected  rock cocaine was being sold there.       
Sheriff's investigators say Wiggins tried to flee down the  hallway from the six-man SWAT                                                                                                                                                                                            team that came into the apartment. In a bedroom,  Wiggins fought with SWAT Officer John Black, who had his AR-15 rifle  slung over chest, authorities said.       
The two men wrestled on the bedroom floor, with Black's rifle  between them. At least one other officer also tried to help control and  detain Wiggins when the first gunshot fired, according to investigators.  Quinonez testified there was a pause and then two more shots.        
       
      
TUESDAY      
       
Piece by piece, Black put on his Rialto SWAT team equipment to  show a jury how he looked on the day a search warrant ended with the  death of Carrera.       
First came the 30-pound protective vest.        
Then came a duty belt followed by radio,                                                                                                                                                                           flashlight, handcuffs and more.        
Prosecutor Cary Epstein then handed Black his AR-15 rifle,  which the corporal slung over his chest, and his handgun to slide in the  holster.       
Black testified the equipment added up to 40 pounds to his 180-pound frame on Nov. 17, 2007.       
At a 5 a.m. briefing the day of the SWAT operation, Black said he learned of his assignment.       
"Point man, No. 1," the corporal testified. Part of his duty  would be to protect the rest of the officers behind him. "The No. 1  person is always the first person to go in the door."       
Black's testimony in Wiggins' trial is key because he  reportedly chased the defendant into a back bedroom, where he tackled  him and fought aggressively to control                                                                                                                                                                           him. During the struggle, Black's rifle fired and  fatally struck Carrera near the bedroom doorway.       
Prosecutors have charged Wiggins with murder and a special  circumstance that the victim was a police officer. If convicted, Wiggins  could spend the rest of his life in state prison.       
After the briefing and various rehearsals in the police  parking lot, the SWAT teams from Rialto and Colton police departments  staged at Base Line and Riverside Drive, making last-minute preparations  before boarding a Bear Cat armored vehicle to the location.       
Earlier on Tuesday, Officer Carl Jones continued his testimony from the day before.        
Jones and Black said they were told that drugs, weapons and gang members could be in the                                                                                                                                                                                                apartment, which was the justification for the heavy response.       
Prosecutors asked Jones what the outcome might have been if  Wiggins complied with their commands to get on the ground when the SWAT  team entered the apartment.       
"He would have been handcuffed, without incident," Jones said.  Instead, Wiggins ran down a hallway when flashbang devices were  deployed and the officers entered the front door, according to  testimony.       
When Jones got to the back bedroom, Black was on top of  Wiggins, on the ground and fighting face-to-face, he said. Jones could  see the barrel of Black's rifle under his right armpit and pointing  toward the door opening, he said.       
Jones said he drove a Taser into the abdomen of Wiggins, who screamed in pain for "the full ride."        
But Wiggins continued to fight with Black, and then the rifle fired.       
Black was surprised to learn that it was his rifle that fired,  and he didn't realize his rifle went off, Jones said. The witness said  he could not see anyone's hands.       
In a conversation later with a sergeant, Jones described the shooting as friendly fire, he said.       
"Friendly fire, meaning it came from our weapon, yes," Jones said, agreeing that he used that term.       
Carrera died at Arrowhead Regional Medical Center in Colton.       
      
WEDNESDAY      
       
Black testified he was in the fight of his life with Wiggins  and was unaware of his rifle's position or that it had fired during the  struggle, which killed Carrera.       
Officers had been briefed that drugs were being sold at the residence and gang members could be inside, authorities said.       
When SWAT officers came through the front door, Wiggins sat up  on a couch, turned to look at Black, who was the first officer inside,  and ran down a hallway.        
Officers shouted commands, "Rialto police, search warrant," and "get on the ground."       
Black followed Wiggins toward a bedroom, and the defendant  charged at the officer as he came through the bedroom doorway, Black  said.       
"He lunges toward me with both hands," Black said.        
Something then hit Black on the left side of his jaw.       
The officer's rifle, which had been in a ready position, swung  to his left side as he let go and pushed back at Wiggins. They both  fell to the ground, with Black on top.       
Wearing full SWAT officer gear and his rifle again in court,  Black demonstrated the fight positioning with a sheriff's detective on  the courtroom floor. Black said he could feel constant pushing pressure  underneath from Wiggins, and the rifle was between the two men.       
"I lost sight of his hands, and they went between us," Black  said of Wiggins. The officer said he punched Wiggins repeatedly while  yelling for him to stop resisting.       
Black heard another officer yell, "Taser! Taser! Taser!" Then  the rifle fired, and Black heard yells of "Officer down!" Wiggins was  moaning.       
Black said his focus was on Wiggins. He heard the shots behind  him, but the corporal testified he was initially unaware of who did the  shooting and who got shot. Black said he was unaware of his rifle's  position and whether it had fired.       
A rifle strike to the left side of Wiggins' head and a kick to  his right side from other officers stunned Wiggins enough for Black to  slip handcuffs on the still-resisting defendant. Wiggins said nothing  throughout the incident, according to the corporal.       
Black said he noticed shell casings and a rifle leaning against the wall. The barrel was pointing to the ceiling.       
"I asked what happened, and they said it's your gun," Black said. "It didn't sink in."       
Carrera was shot while standing in the hallway at the bedroom door. Two other officers carried him out of the residence.       
Black said he was exhausted during what he called "a violent fight."        
In his experience, the witness said his rifle has never come off him and it had never discharged without pulling the trigger.       
Defense lawyer George Wright showed jurors a photo of a  bloodied Wiggins, pointing out locations of the blood, and he focused on  Black's statements to investigators.       
Wright also questioned Black about a broken grip on his rifle  and the trajectory of the bullets fired. The defense lawyer also asked  Black if the SWAT team had been briefed on non-compliance at the  location.       
"I didn't expect that situation to take place," Black said. "We prepared for that situation to take place."       
Testimony is expected to continue today.