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this is Jon Callas at the Jet Propulsion

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Laboratory with your free spirit update

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since we last updated you we've begun

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the extraction testing here in our

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sandbox at JPL of our engineering Rover

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in preparation for doing the actual

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driving on Mars with spirit okay what if

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the team is preparing to do right now is

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situate the rover for the next set of

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testing what we want to do is embed the

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rover so to do that we're spinning each

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of the wheels individually you can see

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the left middle wheel spinning now that

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allows that wheel to sink in without

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moving the whole Rover until they'll do

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the five driving wheels to sync the

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rover down in just that spirit is

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positioned on Mars where all five of

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these driving wheels are embedded deeply

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in the soft loose material we previously

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tested driving the rover forward which

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we think is probably our most likely way

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of getting spirit out but we want to

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look at all the options so the next

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thing they'll do is driving the rover

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backwards to see if we can actually

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drive through this bad section on Mars

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so it'll set it up here and then proceed

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to drive this r over backwards to see

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what kind of progress the rover makes

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and whether the rover has any problems

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like with sinkage because that's one of

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the things that could spell real trouble

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for spirit on Mars although we've been

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busy moving this Rover down here on

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earth spirit up on Mars hasn't moved in

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over two months but that doesn't mean

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the rover hasn't been busy when spirit

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drove and got stuck in this particular

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location it churned up the soil and the

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science team are very interested in this

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particular soil and they've been using

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all the instruments on the rover to

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investigate it this is Jon Callas at the