Hickey said "I don't think that our officers are recognized enough for the valuable role that they play in protecting property, people and even the nation".
Vice President Mike Pence was also in Las Vegas Saturday, there to attend a ceremony honoring the victims killed or wounded in the attack.
A MUSIC fan who told her family she was the "safest person to be around" survived her second mass shooting when she was caught up in the Las Vegas massacre.
Authorities have even put up billboards asking anyone with information to contact the Federal Bureau of Investigation.
On the other hand, Sheriff Joe Lombardo said over the mystery of Las Vegas shooting motive: Stephen Paddock "spent decades acquiring weapons and ammo and living a secret life, much of which will never be fully understood".
"(Our officers) knew they had to close so that's what they did", he said.
He acknowledged the frustration of the investigation, noting that perpetrators of planned-out attacks typically make their intentions clear in a note, social media post or phone call.
It is unusual to have so few hints of a motive five days after a mass shooting.
And he said he felt it was unlikely Paddock could have pulled off the elaborate plan alone, though investigators have no idea who may have helped him.
People are hunkered down at the Jason Aldean concert as a gunman opens fire on the crowd.
The cruises included stops at ports in Spain, Italy, Greece, Jordan and the United Arab Emirates, according to information provided by a law enforcement source who asked not to be identified because the source was not authorized to share information about the investigation.
Tracer rounds illuminate their path so a gunman can home in on targets at night.
City councilmen Ricki Barlow and Steve Seroka praised the police for how they responded to Sunday's attack, but admitted the shooter proved a difficult adversary, and that being prepared for every kind of attack is hard.
Records show that Paddock began stocking an arsenal of weapons in 2016, buying 33 of his 47 guns since last October, including AR-15-style rifles, according to the Wall Street Journal.
Investigators are looking into Paddock's mental health and any medications he was on, McMahill said.
Despite claims by those acquainted with Paddock, the mass killer's live-in girlfriend, Marilou Danley, said there was no indication that Paddock would become violent. One of her sisters says she believes Paddock sent Danley away so she wouldn't interfere with his plans.
What does Paddock's girlfriend say?
A SEX worker has told how Las Vegas gunman Stephen Paddock acted out violent rape fantasies and bragged: "I was born bad".
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