While researching his history of ZG 76, author Peter Kaššák came across a unique gun camera video from this unit. It was filmed by Ofw. Walter Karbstein of 2./ZG 76 on Sunday 2 April 1944. On this date, Bf 110 Gustavs of I. and III. Gruppe of ZG 76 were scrambled from Ansbach and Öttingen and participated alongside crews of II./ZG 1 in the defensive actions over the Reich as US bomber formations flew a major raid on targets in Austria and Yugoslavia, including the ball-bearing plant at Steyr. Some 28 Bf 110 Gs were airborne at 09:15 and, upon return at about midday, reported just one claim that would be confirmed - Walter Karbstein's attack on a lone B-17. Karbstein was in 2. Staffel, but flew his attack in cooperation with others. His victim was likely destroyed southwest of Linz at 5000 meters at about 11:15. Thanks to the Eric Zemper Collection of the 457th BG Association we can see this action on a short gun camera video clip - Karbstein's Bf 110 closes from astern on a lone B-17 which already appears to have had its port wing set on fire but continues to fly straight and level. Note the picture shake as the German pilot unleashes his salvos;