The Knoxville airport will be receiving a different helicopter from Mercy. According to Mercy officials, the Mercy One helicopter will become known as Mercy Knoxville beginning on May 1st. The helicopter stationed in Knoxville will be replaced by the unit currently in Des Moines as well. Mercy has had a presence at the Knoxville airport since December 2010. Since beginning operations out of Knoxville, they’ve added a third helicopter located in Clarinda.