A friend of mine works for JPL, he's a scientist attached to the Curiosity rover (the one before this one). Last time I saw him, he had his JPL laptop with him and showed me how he would program the rover's itinerary for the day. He also has been keeping me updated on the helicopter development, since before the public was informed. I have a solid grounding in aerodynamics and was highly skeptical, but bless the engineers, they found a way to get the darned thing airborne in an atmosphere only 1% as dense as earths. Amazing.
I'm hoping they overfly the descent stage (sky crane) crash site.
"Darn clever, these earthmen, wouldn't you say, Mr. Spock?" - Leonard McCoy