clipped from: www.foxnews.com 
The Pentagon's research arm, the Defense Advanced Research Projects Agency (DARPA), is well into the second phase of a project to develop "programmable matter" that could reshape itself to fit any situation, reports SIGNAL magazine.
Program manager Dr. Mitchell R. Zakin give the example of a soldier needing a tool. He commands a bucket of programmable matter to form a wrench, and it does. Then he needs a hammer, and the wrench dissolves and reforms into a hammer.
Other applications of the technology would be robots that reshape themselves to adapt to specific jobs or conditions, aircraft wings that morph for more efficient airflow, uniforms that change density and coloring according to environment, and even "Terminator 2"-style liquid-metal robots that flow through cracks and small openings.