Simplify the following text for a Grade 11 native English-speaking person.
Original: More specifically , air suicide attack units from the Imperial Japanese Navy were officially called shinpÅ `` tokubetsu kÅ geki tai ( ç é cents ç å æ '' '' æ ' é , `` divine wind special attack units '' ) .
Simplified: The suicide attacks made by Navy pilots were called shinpÅ `` tokubetsu kÅ geki tai ( ç é cents ç å æ '' '' æ ' é , `` divine wind special attack units '' ) .