Swift, a 44-year-old mother of four, was reported missing on Sunday and was last seen early Sunday morning by her husband at their home on Willie Johnson Road. Her white 2004 Nissan Murano was later found on Millsfield Highway near the intersection of Harness Road with a flat tire.
On Tuesday around 4 a.m., Box flew aboard a Tennessee Highway Patrol helicopter equipped with a heat-sensing Flir unit. Box and the pilot performed an aerial search with sheriff's investigators and TBI agents on the ground.
"The heat-seeking unit in the chopper works best when there is very little sunlight or heat from the sun," said Box. "We started checking the last known areas where she may have been. Around her house, vehicle and other areas of interest. At daylight we began a more visual search with a chopper."
Swift's vehicle was impounded on Sunday and was shipped to the TBI's crime lab in Nashville on Tuesday to have forensic processing performed on it.
"Maybe they will be able to tell us something about what happened," said Box.
On Tuesday afternoon, sheriff's investigators confined their search to an area at the end of Willie Johnson Road. They located some unidentified tire tracks in that area and took a molding of them.
"We are doing what we should be doing," said Box. "We are treating this as a missing person and looking for evidence. So far, nothing has been recovered to lead us to believe foul play is involved."
Box added the community is reaching out and offering to help in the search by putting up flyers and talking to people. He added the sharing of information is the best thing at this point from the community.
"I know there are a lot of friends that feel like they need to do something and they can help by getting any information or forwarding information about anybody she had been around or any new acquaintances."
He said people are calling his office and want to help search for Swift, but Box said they are not at the point where a large-scale search would be helpful.
Box noted they have flyers with Swift's photo and information available at the sheriff's department to people needing any to distribute.
On Tuesday evening a candlelight vigil was held at the soccer field at the YMCA in downtown Dyersburg. Around 100 people showed up to pray and show their support for Swift.
Diane Moore, who did not know Swift, was one of those who attended the vigil and prayed.
"I just can't get her off of my mind," said Moore. "I thought I needed to come and pray with them. It is just terrible this would happen here in Dyer County, whatever has happened. I just felt like I needed to be here."
Box said they would continue their search on Wednesday and see if any new information or evidence turns up.
Karen Johnson Swift is described as:
Height: 5' 5"
Weight 138 lbs.
Anyone who has had contact with Swift, recalls seeing anyone near her vehicle since her disappearance, or has information regarding her whereabouts is asked to contact the Dyer County Sheriff's Office at 731-285-2802.