But the edited 27-minute video that was released Thursday illuminates little.
Broward sheriff's Col. Jack Dale disputed Grollnek's conclusion, saying in a statement that the training Peterson and other deputies take includes live-fire simulations for both single deputy and multiple deputy situations.
A judge granted that request, and neither the school district nor the Broward County Sheriff's Office appealed the ruling.
"His actions were enough to warrant an internal affairs investigation, as requested by Sheriff Scott Israel on February 21", the sheriff's office said.
Cruz was arrested a few blocks away from the school. However, the sheriff's office warned that timestamps on the video and timestamps on the dispatch recording might not be "exactly synchronized".
Authorities said Peterson was armed but stayed outside the building for a total of four minutes.
Nevada rallies past Texas in overtime
In that same timeout with 18:40 left in regulation, Nevada coach Eric Musselman was singing a different tune with his players. Unfortunately for Texas , Bamba was chained to the bench in OT after fouling out with 3.8 seconds left in regulation.
Korean Foreign Minister meets Swedish PM in Stockholm
Sweden has had diplomatic relations with North Korea since 1973 and is one of few Western countries with an embassy in Pyongyang. Global media have speculated that Sweden could be a potential location if a Trump-Kim summit were to be confirmed.
While Scot Peterson did not enter the building to confront the shooter, 21-year IL police officer Randy Petersen (no relation) said it's a complicated situation. It is hard to tell from the video if Mr Peterson is actually in the clip at times, as the figures are indistinguishable in the upper corner of the shot.
The 30-minute video shows former Deputy Scot Peterson flagging down another male staff member from the school at the main administration building and hopping on a golf cart to race to the freshman building.
It begins shortly after gunfire erupted, with Peterson and civilian security monitor Kelvin Greenleaf walking with objective outside an administration building, clearly alarmed by sounds.
Cruz appeared in court on Wednesday - the same day thousands of students across the United States conducted school walkouts protesting gun violence - and kept his head bowed as he was formally arraigned. "Addressed the killer. Killed the killer".
"To go to the point where we have a police officer that is either incompetent in their physical skills, their defensive tactics skills, their shooting, they're not going to have confidence and a lack of confidence can get you to a point where an officer either fails to act or overreacts", said Petersen. The Broward Sheriff's Office active shooter policy calls for deputies to interrupt a shooting and search for victims when there's a ceasefire.
Cruz faces 34 murder and attempted murder charges in the attack and a judge entered a plea of not guilty on his behalf Wednesday.
Nikolas Cruz, 19, is accused of killing 17 students and staff during the February 14 massacre at the school, where more than 70 surveillance cameras are installed.
BSO initially resisted release of the video, but at a hearing last week, changed course and agreed the footage should be made public. His attorney has said Cruz would plead guilty if prosecutors would not pursue the death penalty, which they have refused to do.
Bidya Devi Bhandari first term as the president of Nepal was uncontroversial and she was likely to win the elections again. The calculation of the votes to be cast in favour of incumbent President Bhandari from left alliance is 33,575.
She's tweeted that she was sentenced for showing "Turkish flags on destroyed buildings". "I really feel for her". Doğan was arrested in July 2016 after creating the painting, and tried in February 2017.
The stream broke Twitch's all-time concurrent records (for non-tournaments), with more than 600,000 watching at its peak. When Scott and Smith-Schuster joined, the team formed a four-man squad - 100 players take part in each Fortnite battle.
He also accused Kejriwal of hatching a conspiracy to mislead people by playing the emotional card of apology. Now I have found that the allegations are unfounded, and hence, there should be no politics on such issues.
Mobile internet providers have been asked to shut down service, except for essential public services. Balinese Hindus observe four "prohibitions" - no fire, no travel, no activity and no entertainment.
Of the 4 players, 3 of them average better than 40% from beyond the arc. "You're not just passing it where you want to pass it". Buffalo players believe keeping their focus is the biggest key against Kentucky, which has won eight of its last nine games.
The bill, which is non-binding, would have gone into effect this morning, even if Trump had not signed it, said the White House. This view is echoed in an analysis by Sean King, senior vice president at US consultancy and lobbyist firm Park Strategies.
The move comes as Facebook continues to deal with fallout from the 2016 presidential election. If true, this is another unacceptable violation of trust and the commitments they made.
Vladimir Putin urges citizens to vote in presidential election
Russian court officials at the time said he'd received at least $100,000 for his work for MI6, the British intelligence service. Britain has announced the expulsion of 23 Russian diplomats over the poisoning, and Russia said it would respond in kind.
Nintendo Announces Indie Showcase For March 20th
The Nindies Showcase can be streamed from Nintendo's official live video website or from their YouTube page. Excited fans should expect a deluge of both fresh announcements and updates for previously revealed titles.
'Dead' man says he's alive, but court disagrees
Constantin Reliu, 63, was declared dead by his wife in 2016, after he moved to Turkey and went off the grid for almost 25 years. Mr Reliu wants to file another lawsuit but has no money, and suffers from diabetes, which he says makes everything more hard .
Melissa Joan Hart to reboot 'Clarissa Explains It All'?
In 2015, Kriegman wrote the novel Things I Can't Explain as a sequel to the series with the main character now in her late 20s. Details beyond that are scarce, and it's unclear at present if any other original cast members would return alongside Hart.
China to unveil new govt under Xi tomorrow
Wang replaces Li Yuanchao, a relatively low-profile politician who has represented Xi on trips overseas . The vote was witnessed by journalists inside central Beijing's Great Hall of the People.
Donald Trump dumps Rex Tillerson as secretary of state
The former ExxonMobil chief had a series of public rifts with the White House after being appointed a year ago . Gina Haspel will become the new Director of the Central Intelligence Agency , and the first woman so chosen.