Emergency is the mother of making exceptions. During both US gulf wars, the army broke from its long tradition of over-regulating new systems before they could be fielded, especially for small semi-autonomous platforms like flying drones and robots. Entirely new systems as well as major updates to fielded system were routinely prototyped in-country / on-the-battlefield in Iraq and Afghanistan. The demand for new capabilities and fixes was simply too great not to ship ASAP.