A rainy day during the spring of 1941 at Gilze-Rijen. Waffenwarte (armourers) carrying out gun harmonisation tests on a jacked-up Ju 88 C of 3./ NJG 2. The aircraft is in an in-flight attitude, note the lifting device supporting the rear fuselage. Note too the armoured firewall behind the gun compartment and the undercarriage fully extended (unloaded). The gun smoke indicates that a live firing test is being carried out. (see also page 83 of Stipdonk & Meyer Teil 2)
http://www.ebay.de/sch/engelbubu-fotos/m.html?item=400498830013&pt=Militaria&hash=item5d3f972abd&rt=nc&_trksid=p2047675.l2562
more on this blog from NJG 2 at Gilze Rijen
http://falkeeins.blogspot.co.uk/2013/06/more-scenes-from-gilze-rijen-ju-88s-of.html