I'll tell you another thing though.... when the IRT shout comes in, Ive never seen any engineer dawdle to the cab. Doesn't matter if they are 3 stone or 23 stone they all cover the length of the pan in nanoseconds.
This speed is also attainable when a 1000 pounder falls out of the bomb rack, way before fitness tests. When you see an armourer running without his tea mug..............