A team of NASA scientists, including De Leon himself, took the suit through the paces of simulated spacewalks during which they collected samples and operated tools like drills--the very kinds of activities the first humans on Mars very well might undertake. If, that is, we ever get there. With NASA's purse strings tightening, developing an interplanetary space vehicle may not be in cards for quite a while, leaving America's astronauts all dressed up in their NDX-1s with no place to go.