At a news conference, Gillespie said Jerad and Amanda Miller had prepared for the June 8 killings by carrying water and military meals ready to eat (MREs) as well as hollow-point ammunition. The couple died soon after their victims, with Amanda Miller shooting herself after her husband was killed by police.
"They knew they weren't going to use restrooms or they knew they were going to be in a standoff," Gillespie replied when questioned about the diapers.
Alyn Beck and Igor Soldo, officers with Las Vegas Metro, were ambushed as they ate lunch at at CiCi's Pizza shortly before noon on what should have been a quiet Sunday. Investigators said the Millers took the officers' guns, placed the Revolutionary rattlesnake flag on the bodies and went to a nearby Walmart.
"The revolution has started. The cops are coming. Get out!" Jerad Miller told shoppers in the store.
Amanda Miller shot Joseph Wilcox, who had a permit for a concealed weapon and apparently tried to stop her husband, Gillespie said. One police officer tried to negotiate with Jerad, who refused to respond.
"Stand down. You have failed. I am in charge now," Jerad said.
Gillespie refused to speculate on the Millers' motives. The couple met and married in Indiana and moved to Las Vegas in January. They spent time at Cliven Bundy's Nevada ranch with other armed supporters in his confrontation with the U.S. Bureau of Land Management over grazing fees.
Celebrity Families of 2014 [PHOTOS]