[gotenks918]

Код:

new KillStreak[MAX_PLAYERS];

public OnPlayerDeath(playerid, killerid, reason)
{
	if(IsPlayerConnected(killerid))
	{
	  KillStreak[killerid]++;
	  KillStreak[playerid] = 0;
	}
return 1;
}

And then on your /airstrike command just check if(KillStreak[playerid] == 5) or if(KillStreak[playerid] => 5)