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I'm really close to unlocking all the pro versions some of them are really useful. If you like to use the specialist strike package I recommend that you get all your perks pro otherwise you wouldn't gain the maximum benefit. I've just finished unlocking Sitrep pro which took me a while because hardly anyone puts down equipment. Although I only use Sitrep in Search and destroy because in other modes like ground war you can't really hear anything that much its chaotic.