If I remeber rightly, going back to SH2 you could attach a unit to your sub, it could be miles away but it made its way to you because it was attached.
I did this a few times and it worked, plus you got added support in a battle and they also acted as a decoy so you could attack without too much attention.
I'm not sure if something like this could work in this sim, just a thought,
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Silent and Violent
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