Interesting conspiracy theories.
Why exactly would we want to shoot down any choppers?
They're conspiracy theories for now.
And I for one am not ready to believe them, just yet. Despite the fact that it's been 72 hrs since his disappearence.
But, China has a policy of frequent escalation in Tawang to keep things on the boil. And the fact that we have a good foot presence in Arunachal Pradesh, Bhutan is a virtual client state and that Arunachal Pradesh is small; and despite these three, he still hasn't been found for over three days, leads one to believe that there may be something suspicious behind the incident. That something suspicious, may not be entirely obvious. China has no influence over the electoral process in Arunachal Pradesh, and kidnapping the CM would serve for no other purpose than for information, which they could gain through more prosaic means; and avoid a conflict of interest with India in the first place.