Harri Anne Smith, a state senator in Alabama, has been in close contact with five-year-old Ethan's family since he was taken hostage last week. She said there are "lots of smiles" now that he's been freed and former FBI hostage negotiator Clint Van Zandt discusses the details of the case.

An Alabama boy is set for the "greatest" birthday of his life after being freed from a week's captivity in an underground bunker, a pastor said Tuesday.

The boy, snatched from a school bus in a fatal shooting, was rescued after a daring raid by FBI agents that left his kidnapper, Jimmy Lee @!$%#s, dead.

The 5-year-old, who is recovering in hospital, turns 6 on Wednesday.

“I would image it’s going to be the greatest birthday that family and that little boy has ever experienced and probably will ever experience,” local pastor Michael Senn told TODAY.

The boy was reunited with his mother and is "laughing, joking, playing, eating," said Special Agent in Charge Stephen Richardson at a press briefing Monday.

"He's very brave, he's very lucky. His success story is that he got out and he's doing great."

Richardson said the operation began when @!$%#s was seen holding a gun. "At this point, FBI agents, fearing the child was in imminent danger, entered the bunker and rescued the child.”

The Dothan Eagle newspaper reported that two loud blasts came from the scene shortly before 3:30 p.m. According to the report, an ambulance then drove up the private dirt road where @!$%#s’ homes is located and then left a short time later.

The blast apparently came from a "diversionary device," an FBI source confirmed to NBC News. FBI officers had lowered a camera into the bunker -- they would not reveal how, saying they may want to use the method in the future -- which allowed them to determine when to throw in the flash-bang to distract @!$%#s.That's when they entered through a door at the top of the bunker.

At the Monday night press briefing, Dale County Sheriff Wally Olson said that @!$%#s, 65, was harmed when officers entered the bunker but he would not say how the captor died. A law enforcement official told NBC News they are waiting for the medical examiner's report to determine how he died.

Related: Official says boy is his 'lovely' self after rescue

The ordeal began at 3:30 p.m. CT last Tuesday when @!$%#s -- described by his neighbors as a paranoid survivalist -- grabbed the boy from a school bus in Midland City, Ala.

@!$%#s boarded the bus and demanded that the bus driver, Charles Poland, 66, turn over two young children. When Poland refused, @!$%#s fatally shot him and took the boy.

@!$%#s, a decorated Vietnam veteran, took Ethan to an underground bunker that neighbors had seen him digging. The bunker is believed to be roughly 8 feet by 6 feet and to be stocked with supplies. The bunker has a ventilation pipe that authorities used to deliver items. Authorities have not said how long they believe @!$%#s could have lasted underground, or discussed a motive for the kidnapping.

After a six-day standoff, a federal hostage team stormed an underground bunker in Alabama, where Jimmy Lee @!$%#s, 65, was holding five-year-old Ethan hostage. Ethan was freed safely, while @!$%#s was found dead. NBC's Gabe Gutierrez reports, and Dale County Sheriff Wally Olson and former FBI hostage negotiator Clint van Zandt discuss the case.

Over the last week, hostage negotiators delivered a red Hot Wheels car, Cheez-Its crackers and other food and medicine to the boy, who has a mild form of autism. The FBI said Sunday that the boy’s captor “continues to make the environment as comfortable as possible for the child.”

The boy has Asperger’s syndrome and attention deficit hyperactivity disorder, a state representative said last week.

Law enforcement officials remained largely mum about the details of the case, possibly because it was believed that @!$%#s kept a television set in the bunker. Early on in the negotiations, they moved reporters farther from the scene. Throughout the week, they canceled press conferences, saying that nothing had changed.

Many of the law enforcement press conferences appeared to have been directed more at @!$%#s than at reporters. Sheriff Olson went so far as to thank @!$%#s “for taking care of our child.”

“That’s very important,” Olson said.

Before the standoff ended on Monday, Olson told reporters that @!$%#s "feels like he has a story that’s important to him. ... Although it’s very complex, we’re trying to make a safe environment.”

At the Monday night press briefing, Olson would not say what that story was, repeating that the investigation was ongoing and that the crime scene still needed to be processed. But he was passionate -- and willing to discuss -- Ethan.

"This boy is a very special child. He's been through and endured a lot and by the grace of God, he's OK," Olson said. "That was the mission of every man and woman on this compound. Of every law enforcement officer, every first responder, and all of the community who prayed to bring him home safely."

Former FBI hostage negotiator Clint Van Zandt said on the TODAY show that patience is key in hostage situations.

“Eighty-five percent or more of standoff situations like this end nonviolently,” Van Zandt said on Saturday. “Law enforcement doesn’t want to do anything precipitously that could cause anybody to be hurt at this time when the talking cure will likely work in this situation.”

Following the end of the hostage situation, Alabama Gov. Robert J. Bentley released a statement, hailing the efforts to save the boy but mourning the death of the bus driver:

"I am thankful that the child who was abducted is now safe. I am so happy this little boy can now be reunited with his family and friends. We will all continue to pray for the little boy and his family as they recover from the trauma of the last several days."

President Barack Obama also weighed in, calling FBI Director Robert Mueller to compliment his officers.

NBC's Gabe Gutierrez, Erin McClam, Matthew DeLuca, Jeff Black and Pete Williams contributed reporting.

Related:

Son says bus driver in Alabama hostage crisis gave life for 'his children'

Sheriff to Alabama hostage-taker: 'I want to thank him for taking care of our child'

