Yes, you can. Local mode is just like online, but just with two people. Same maps, same guns, same kill streaks.
Trololololo /b/
they have to get the kills first!
in splitscreen online - yes - they can edit there killstreaks and alter classes
get more kills
you change your kill streaks before or after thegame.
No you can't, the campaign is for 1 player.
it makes kill streaks 2 kills less
Player 2 gets the killstreaks that Player 1 has set up. Player 2 can change them if they click on Killstreaks. This is only available if you log in online, then play offline. The same is true of classes.
yes
You call up some plumber! You call up some plumber!
play local
Skid marks.