Trump: Parkland deputy 'didn't have the courage'

President Trump speaks to reporters about the NRA and the shooting at Marjory Stoneman Douglas High School. CNN photo.

(CNN) -- President Donald Trump said Friday that the armed school resource officer who stayed outside Marjory Stoneman Douglas High School as last week's shooting unfolded did a "poor job."

"When it came time to get in there and do something, he didn't have the courage or something happened, but he certainly did a poor job. There's no question about that," Trump said of Scot Peterson on the White House South Lawn before leaving to speak at CPAC.

"But that's a case where somebody was outside, they're trained, they didn't react properly under pressure or they were coward," Trump added. "It was a real shot to the police department."

Trump's comments Friday come as he has called for "hardened" schools with armed teachers to act as a deterrent and, if necessary, a last resort to fire back at shooters.

Peterson, the resource deputy at the Parkland, Florida, high school, waited outside the building as Nikolas Cruz fired shots, killing 17 people last week, officials said Thursday. Peterson resigned after he was suspended without pay.

Broward County Sheriff Scott Israel said Thursday that Peterson remained outside "for upwards of four minutes." The shooting, Israel said, lasted six minutes.

CNN's calls to Peterson on Thursday were not returned.

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The Gayly. February 23, 2018. 12:00 p.m. CST.