The best way to get this is get 7 people together. Have 2 on one team and 5 on the other. Have the 5 meet in one place. You need to be a support person to call in the strike and just call it in where the 5 are standing. Make the second person on your team is no where near the impact area and you'll get the medal notice. After the game ends and the next one starts the achievement will pop (or log out of EA servers and back in and it will pop then). This is how we did it anyway. Worked for all players involved.