no more javelin but there's a new one called valkyrie which you can control
You can't. Grab the javelin missiles and shoot down the rocket
Yes, it's a kill streak.
If you are playing it on PS3, it's L1. You can hold it, to fire more missiles at a time when L1 is released, or just tap L1 to fire individual missiles
No, Modern Warfare 3 does not have Combat training which Black Ops did, instead they have a all new 'Survival Mode' which is like zombies from 'Black ops' but instead of zombies there are armed soldiers. also in 'Survival Mode you will be able to purchase some Killstreaks such as Predator missiles, Precision Airstrike.etc.
I have black ops and MW3 but I find MW3 to be better but you do get bored of it as you do with black ops but I recommend MW3 but black ops is fine.
Black Ops
you can't get a nuke in black ops
Yes.
black ops is brill and can not be better .
Black ops
MW3 is after COD black ops.
Black Ops 2 Zombies is harder but also way funner than Black Ops Zombies.