Original sentence: At that time,Traverse City became a helicopter-only unit operating 3 HH-3F helicopters.In 1986, a premature baby boy was delivered aboard an HU-25 during an air evacuation (AIREVAC) from Alpena to Traverse City, Michigan
Edited sentence: At that time, Traverse City became a helicopter-only unit operating 3 HH-3F helicopters.In 1986, a premature baby boy was delivered aboard an HU-25 during an air evacuation (AIREVAC) fromAlpena to Traverse City, Michigan