On a serious note. Crewmen had to move across the bomb bay catwalk, in flight, often under fire. Wearing bulky leather insulated flightsuits, usually with various pieces of equipment strapped on. Perhaps with slippery fluids attacking their step.
None of which I am contending with in these two pics. My shoulders will not even fit between the bomb racks! I can not imagine what it was like!
Please forgive the expression in the photo. Let us reflect upon what those young men endured.