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follow our pages at facebook conditional, goggle plus, twitter and more. crimea. russian soldiers have seized military bases. >> it was not the day sergy expected. russians came to his base wanting him to surrender. "they are here to bring stability", he refused to give up. >> the colonel watches and tells someone they're here. >> the ukrainians move an armoured fighting vehicle to the gate. >> know one is coming. i'm a lone. we have the two armies in a standoff. ukrainian and russian troops all around here. they came in early and told the commander to give up the base. he said he wouldn't. now they are standing against each other. they want the ukrainians to lay down arms. >> an offer of negotiations. the colonel goes to visit the growing russian encampment. all they cap agree on is no one wants to start a war. an orthodox priest appeals for piece. some coming to prays the russian. >> people from another country here. what do we call it, intervention, occupation. they have no legal right to be here. >> but they are. given the way they are setting up, there's no w

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they have smoke goggles and also in some airplanes basically a plastic tube the pilots can put up against their eyes and look at the instruments. so there's a number of safeguards there. plus, again, you'd have to take out all the electrical system to disable all the different methods of communication. there would be at least somebody making a radio call. >> every fear we could imagine is easily discountable. >> yeah. >> well, i want to ask andrew a question, just shifting gears quickly to the satellite images, andrew, and want to know what types of images can be seen from the various satellites? and why is it not surprising that we haven't found anything yet from these images? >> yeah, sometimes people think about the fact we have dozens of these satellites in earth orbit right now returning all kinds of images. they wonder, why isn't this an easy thing to find, an aircraft that might be somewhere? it depends what kind of satellite imagery we're actually talking about. the images you're used to seeing on your nighttime news, weather satellite image, things need to be the size of several city blocks before you an see anything. those satellites are thousands of miles in spa