One of the sculptures hanging in the Washington Convention Center.
Hanging above the Lockheed Martin area of the hall.
One of many constructed from Lego pieces.
Not an especially unusual sight considering the heavy presence of the US military at this show.
One of those hovering overhead and very stealthily watching you. :-)
Isolated at the end of the main hall in the Homeland Security area.
Squids 4 Kids
That's the name of the group, associated with Stanford University, sponsoring this hands-on experience.
One large booth offering refreshments (non-alcoholic) for it's visitors.
Everyone gets a chance to control their device, although finding yours could be a problem. Love the kid in the chef's hat at the right.
I couldn't see exactly what they were doing on the tablets but the table was always jammed.
The army was teaching kids how to control their robots. Never too young to recruit, I guess.
Fill the bucket with smoke, cover one end with a cloth, and let an enthusiastic kid hit it to produce the rings.