A missile hit its target a burst of 30mm some will hit some will keep going maybe hitting innocent people(it is very accurate 30mm but dont forget that the shells will keep going right through a human body and then hit someones house or what ever behind the hell fire will hit the tube blow it to bits and kill anyone within a few meters but no further.).What do you think is better?Also as FLIR quality is reduced by the military so that you cant see the true details there should be a read out on the screen somewhere a read out that shows the range someone with an anti-war view could also have scrubbed this out to further thier veiw.
Destroying the insurgetnts abilty to destabilze is worth the missile it damn sure would be if you might be on the reciving end of that mortor.
Take look at the 20mm of a SuperCobra here

the clip name is wrong this is a SuperCobra gun sight):
And some apache 30 mike mike(this clip is very clear but not what an un scrubbed viedo would look like also note that the chopper is hovering being a very stable gun platform):
This one at the end will show you that in a moving Apache the 30mm will have a high scatter: