I saw Atomic Annie when I visited the National Atomic Museum on Kirtland Air Force Base in New Mexico. It was a fabulous museum. But, after 9/11, they moved it to a location off the base for security reasons. Don't know if it's back on the base yet.

Talk about "penis-envy": After SAC was awarded a monopoly on atomic bombs, every branch of the Service demanded their own nuclear toys. "Atomic Annie" was one of the Army's toys. That huge piece of artillery had to be hauled around by heavy trucks. Then the enemy had to stand still while the operators took aim and fired the thing. Oh, and by the way, the crew had to be sure to be very far away from the target, and check the wind, since it fired a 15-kiloton warhead.