Hi, I'm having trouble contacting the Russian aircraft on Guard channel, in the 1st part of mission 13. I select guard on comm 2 whilst flying beside them, hit spacebar and nothing happens. Have tried guard on comm 1 also, but still nothing. Not sure if its a bug, or if I'm not doing something correctly. Great campaign, have really enjoyed so far, but am stuck on this mission/issue. Any help appreciated, thanks.
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