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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.
If you want sitrep, go into infected with 2 controllers, bring controller 2 to controller 1, place controller 2 tac insert down and then controller 1 desetroys it. Make sure you have specialist bonus first though!