What killstreak rewards are available in Modern Warfare 3 (for all three strike packages)? What does each one "do"?
Assault Strike Packages will give bonuses that involve killing more opponents.
Support Strike Packages wil give bonuses that involve supporting you own team.
The Specialist Strike Package will give you additional perks at 2, 4, and 6 kills. The order and type of these perks are determined by the order you select them in.