Here's a video introducing the latest model of the
exoskeleton by Lockheed Martin.
The purpose of an exoskeleton is to increase the physical strength and endurance of whoever's wearing it.
It can allow soldiers to walk much longer and carry heavy loads without tiring.
With the HULC by Lockheed Martin, a built-in microcomputer synchronizes the movements of the machine with the serviceman.
The HULC gives users enough strength to carry 200 pounds, or 91 kg.
See the data sheet (PDF).
http://www.youtube.com/watch?v=kat8I5UM_Vs