1: Start MW3 and the Hack/Tool. 2: Select the class you want to change the Killstreak for. 3: In-game open your class and set the Strike Package to SUPPORT. 4: Go back to the Hack/Tool. 5: In the Killstreak 1-3 you will choose what killstreak that will be used. 6: Press Save when you have chosen witch Assault Killstreaks you want to use. 7: Close the program and enjoy your game.