"He's been flying since he was three months old, " Tony Thompson tells CNN.

CNN: Pirates, wars: Hurdles for flight phobia boy

"Our hearts and prayers go out to the families and friends of those precious little girls, " said Black Hawk County Sheriff Tony Thompson.

CNN: Bodies identified as missing Iowa cousins

Klitschko's most recent defense of his quartet of titles came against American Tony Thompson in Switzerland two weeks ago, when the Ukrainian stopped his 40-year-old opponent in the sixth round.

CNN: Klitschko: Why I sold my Olympic gold medal for $1M