Killstreaks now hold far too much sway over the outcome of a match, and more often than not the final kill cam will show someone being gunned down by an automated helicopter or bombed by a jet.
Not exact matches
Now, the baseline
killstreak item is the SAT COM, a ground - based deployable that, by default, paints enemies on your minimap if they're in your team's direct field of vision.
You can
now be a juggernaut with a knife as a
Killstreak reward; quick scoping has turned into its own weapon class, and, of course, who could forget Riley, the Call of Duty dog.