 The spring proved to be a busy one ; Johnson claimed three Fw 190s damaged two days later . On the 11 and 13 May he destroyed an Fw 190 to reach 10 individual air victories while sharing in the destruction of another on the later date and a Bf 109 on 1 June . A further five victories against Fw 190s were achieved in June . Two were claimed on the 15 June . On the 17 June while leading the wing over Calais Johnson bounced one of JG 26 's Gruppen led by Wilhelm @-@ Ferdinand Galland . He shot down Unteroffizier Gunther Freitag , 8 . / JG 26 who was killed . On 24 June he claimed one destroyed and one damaged on and another victory on the 27th to brought his total to 15 . 
