You're not going to like this but ... 1) Militaries routinely lock-on to passenger airliners for practise. Russia is rumored to cancel the missile launch far

You're not going to like this but ... 1) Militaries routinely lock-on to passenger airliners for practise. Russia is rumored to cancel the missile launch far into the sequence, though sometimes they goof up and it fires. 2) Airlines knowingly route over war zones to save fuel, and usually only stop after a shootdown, like the MHA flight over the Ukraine.