I got to go to the Naval Surface Warfare Center in DC to check out the ISR competition. Its not robots, just people propelled mini-subs, but could still be neat and useful for those who like UUVs and UAVs.
I took a few videos . . .
[youtube=425,350]_lCU16ziARY[/youtube]
[youtube=425,350]gtHJh5t81x4[/youtube]
[youtube=425,350]0yZd7ycB-xw[/youtube]