For two days our research has maintained, just like the San Bernardino attacks (which hold multiple similarities), the key to the Pulse nightclub shootings will be found with Noor Zahi Salman, Omar Mateen’s wife.
♦ Noor Zahi Salman (30), [DOB 5-26-86, Mother maiden name Atayem] Omar’s second (and current) wife, was born in San Francisco, CA.
She too was previously married and divorced in 2009 in Contra Costa county California east of San Francisco. –Court Records Link–
Prior to marrying Omar Mateen, Noor Salman was married to Ahmed Abu-Rahma in California. (marriage dissolution FLMSD09-03480 07/29/2009).  Noor later married Omar in Florida in 2013.  The connection between Noor and Omar appears to be Noor’s father Abdallah Salman (61)  
Now media reports are revealing, through LEO sources, Noor knew about the terrorist attack in advance:
(Via NBC) The Orlando gunman’s wife has told federal agents she tried to talk her husband out of carrying out the attack, NBC News has learned.
Omar Mateen’s wife, Noor Zahi Salman, told the FBI she was with him when he bought ammunition and a holster, several officials familiar with the case said. She told the FBI that she once drove him to the gay nightclub, Pulse, because he wanted to scope it out.
Mateen opened fire at Pulse early Sunday, leaving 49 dead and 53 injured. Twenty-seven victims remained hospitalized Tuesday. Six were in critical condition, according to hospital officials who said the death toll was still at risk of rising because one or two of those patients were “profoundly ill.”
Authorities are considering filing criminal charges against Noor for failing to tell them what she knew before the brutal attack, law enforcement officials say, but no decision has been made.  She is cooperating with investigators, several officials say. (read more)