The videos show Baker's garage full of weapons. In another video, he calls out a Unified police officer by name after the officer left a note on this door indicating that he wanted to talk to him.
"He's got signs that he's running for president of the United States. He's had certain apocalyptic-type messages on his car and at one point on the front of his car he had a chainsaw and a hatchet and things about apocalyptic messages and zombies — just very strange," Brain said.
Other bizarre behavior, according to neighbors, has included Baker posting signs in his yard and hanging items from trees, including a large telescope. Natalie Harvey, who lives in a house behind Baker's property, said she had seen plastic fire hydrants and solar lights in the trees, as well as a fake dog on the porch.
"I've heard neighbors say he dances and weird stuff late at night and hula hoops," she said.
While neighbors said they were aware of the You Tube videos and his apparent aggressive nature online, in person he was nice to others in the neighborhood.
Harvey said the first signs of trouble Sunday came about 8:30 a.m. when she could hear Baker yelling and cursing from his house.
Then things were quiet until about 2 p.m. That's when Baker allegedly called police to say he had left an explosive device at a house at 3734 E. Thousand Oaks Circle (4585 South). Winder said no device had been found at that home. The people who live there were described by Winder as "longtime friends" of Baker who were trying to help him.
When the incident began, however, no one knew if the devices were explosive. But detectives feared Baker did know how to make them.
"The problem that we're having is this individual has made multiple threats and has notified law enforcement of his ability to set up explosive devices. We know he is able to utilize those, we know he has the training to use them and we know he's armed. We know he has weapons,” Hughes said. "There's no reason not to take him seriously."
Neighbors said Baker returned home Sunday afternoon from an unknown location in a big hurry.
"He came down the street quite fast with his window down yelling and talking to everyone who was outside their homes that the police would be following him, that the police would soon be surrounding his home and the police thought that he was Jesus Christ, and that he was not Jesus Christ and that he was indeed David Baker, asking us to tell the policeman who he really is," Brain said. "And then he continued down the street into his driveway, and the police came down the street extremely fast."
An officer had been watching Baker's house about 200 to 300 yards away with binoculars, Brain said. When Baker pulled up, several officers were close behind him, but he got to his house and shut the garage before they could confront him.
As police started evacuating homes, Harvey said officers got ladders for some residents so they could climb over fences to get to safety through backyards rather than in front of Baker's house.
As the standoff progressed, the only communication between Baker and police was yelling through an open window or door.
"We are very concerned about the communications coming from the individual in the home. This is a little unusual in that it's very evident we're dealing with a very unstable, mentally ill offender at this point and time," Winder said before Baker was taken into custody. "I would characterize his communication as disjointed. It's nonsensical and it's difficult to understand the nature of the circumstances."
One neighbor said she could hear Baker yelling for officers to get out of his flower bed. Another time he yelled he didn't want to go to jail.
Winder said Baker also "made very clear he posses weapons."
Baker is not believed to have a military background and investigators were not sure where he may have received training to make explosives.
"What we're going to do is make sure that both outside and inside, anything that appears suspicious is rendered safe. We definitely have some items on the exterior of the home we're very concerned about," Winder said.
Contributing: McKenzie Romero
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