 Complete the following phrase:  Picatinny Arsenal was tasked to create a nuclear capable artillery piece in 1949. Robert Schwartz, the engineer who created the preliminary designs, essentially scaled up the shell then the maximum in the arsenal to and used the similarly-sized German K5 railroad gun as a point of departure for the carriage. The name Atomic Annie likely derives from the nickname Anzio Annie given to a pair of German K5 guns which were employed against the 