Polk County Sheriff's Office

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This undated photo provided by the Polk County Sheriff's Office shows John Camfield, a 48-year-old driver accused of fleeing after hitting three children when they got off a school bus, Thursday, April 27, 2017, in Ponciana, Fla. Polk County Sheriff's spokeswoman Carrie Horstman said in a news release that two of the children were critically injured when the car hit them on Thursday afternoon. She says the suspect, John Camfield, also hit another car before an off-duty sheriff's deputy who lives in the area arrested him. (Polk County Sheriff's Office via AP)

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FILE - This Dec. 21, 2016, file booking photo provided by the Polk County Sheriff's Office in Des Moines, Iowa, shows Susan Ackerman, a former administrative law judge for Iowa Workforce Development. A court ruling issued Thursday, Jan. 12, 2017, upheld the firing of Ackerman who helped expose improper political pressure in Gov. Terry Branstad's administration, saying she lied to get her adult daughter state-funded health insurance. (Polk County Sheriff's Office via AP, File)

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This Wednesday, Dec. 21, 2016 booking photo released by Polk County Sheriff's office, Susan Ackerman at the Polk County Jail in Des Moines, Iowa. The former administrative law judge for Iowa Workforce Development has been charged with fraud for allegedly adding her ineligible daughter to her state insurance plan, in a case that her supporters are calling politically motivated. In 2014, Ackerman helped expose "perceived pressure" on judges to favor employers over jobless workers in disputes over unemployment benefits. (Polk County Sheriff's Office via AP)

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This photo released by the Polk County Sheriff's Office shows a plane nose-diving into the ground after getting tangled with a parachutist, left, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT

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This photo released by the Polk County Sheriff's Office shows a plane nose-diving into the ground after getting tangled with a parachutist, left, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT

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This photo released by the Polk County Sheriff's Office shows a plane nose-diving into the ground after getting tangled with a parachutist, left, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT

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This photo released by the Polk County Sheriff's Office shows a plane getting tangled with a parachutist, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT

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This photo released by the Polk County Sheriff's Office shows a plane getting tangled with a parachutist, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT

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This photo released by the Polk County Sheriff's Office shows a plane nose-diving into the ground after getting tangled with a parachutist, left, Saturday March 8, 2014, at the South Lakeland Airport in Mulberry, Fla. Both the pilot and jumper hospitalized with minor injuries. (AP Photo/Polk County Sheriff's Office, Tim Telford) MANDATORY CREDIT