Omar Mateen, the gunman who killed or wounded more than 100 people at an Orlando nightclub, was an expert shot who consistently posted high marks at gun ranges, according to state records.
"He basically was a perfect shot, not quite perfect, but he was an expert marksman," said John Murrow, a West Palm Beach firearms instructor who gave Mateen a refresher course in 2011, something required for the Fort Pierce security guard to keep his license.
On June 12, Mateen opened fire at Pulse, a gay nightclub south of downtown Orlando, with a 9 mm semi-automatic handgun and a .223-caliber assault-style rifle, killing 49 and wounding more than 50 others. He was killed in a shootout with Orlando police.
State records show that, at the gun range, he consistently posted high marks.
On a scale of 0 to 240, Mateen scored 235 or higher on four out of 10 firearm proficiency tests, according to records from the Florida Department of Agriculture and Consumer Services.
"It means that basically he scored as an expert marksman," Murrow said.
Luis Lugo, owner of East Orlando Security Academy, has trained more than 600 security guards, he said.
"Basically you're shooting from a holster," he said of the gun range tests. Students fire at a target from close range, then long range in a timed drill, he said.
The shortest distance is 1 to 3 yards, he said, and the longest about 25 yards.
Mateen's scores indicate that he was "a pretty good shot," Lugo said.
Even so, Lugo said, the nightclub shooting was far more complicated than a gun range drill. The club was dark, Mateen had multiple targets who were moving, and so was he, Lugo said.
Mateen took those gun range tests from 2007 to 2015. His average score was 229. The minimum passing score is 168.
Mateen's most recent test was Aug. 16, when he scored 203, his poorest performance, records show.
Mateen also posted high marks on the written portion of the firearms exam, records show. The test has 100 questions, and seven times he scored a perfect 100.
He took two tests in 2011, records show, although it's not clear why. On one, he used a 9 mm Smith & Wesson semi-automatic, the same caliber handgun he used at Pulse.
But on most of his firearms tests he used a .38-caliber Smith & Wesson revolver, records show.
Murrow, owner of Knight Global International, a licensed private security and investigating agency in West Palm Beach, said he remembered little about Mateen.
He was one of two students in a four-hour security guard refresher class Murrow taught on Nov. 16, 2011, at Gator Guns & Archery, a West Palm Beach gun store.
By then, Mateen had been a security guard for four years and worked for G4S, the company that employed him at the time of his death.
"He came in. He did his four hours of refresher. That was basically the last time I saw him," Murrow said.
Mateen first got his "G" security guard license, one that allowed him to carry a firearm, in 2007. But the state suspended it on Sept. 16, 2014, because he failed to take a mandatory four-hour recertification course, records show.
The state lifted the suspension a week later when got the required training.
On Tuesday, the department confirmed it is investigating Mateen's initial security guard license application from 2007. That's because a psychologist listed as having performed a mandatory psychological evaluation, told NBC News that she had not.
A spokeswoman for G4S said it was a clerical error and said Mateen had undergone that evaluation and passed.
Mateen bought the guns he used in the massacre at a St. Lucie gun store a few days before the assault. He did not need a security guard's license to buy them.