Sorry guys, a few glitches in the system for adding new locations. I've fixed that up now so the HVM should be locked and should take only 7CR to drop.
May I suggest, for those who are already a high rank don't need to unlock the HVM, you may want to keep Tripoli under insurgent control... If you do that, it'll only take 7CR per hit when the "drop insurgency" daily challenge comes up. On the other hand, locking it down will get you closer to the insurgency medal incentives.