During the battle off the coast of Hong Kong, [Leatherback](http://pacificrim.wikia.com/wiki/Leatherback_(Kaiju)) emits an electromagnetic pulse

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>  disabling [Striker Eureka](http://pacificrim.wikia.com/wiki/Striker_Eureka), and at least briefly, some of the systems at [the Shatterdome](http://pacificrim.wikia.com/wiki/Shatterdome), but not [Gipsy Danger](http://pacificrim.wikia.com/wiki/Gipsy_Danger), as Gipsy is "analog" and apparently not affected by the EMP blast despite being at the Shatterdome where other electronics were shut affected. 
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How is this Jaeger different? It is nuclear powered, but like the other units, it is controlled by electronic systems. Nuclear or no, its systems should have been disabled like everything else.