protected void readDefensDestructoreMissiles(NodeList missiles, String whoLaunchMeId) {
		String targetId, destructTimeCheck;
		int destructTime;
		
		int size = missiles.getLength();
		for (int i = 0; i < size; i++) {
			Element missile = (Element) missiles.item(i);
			targetId = missile.getAttribute("id");

			destructTimeCheck = missile.getAttribute("destructAfterLaunch");
			
			if (destructTimeCheck.equals(""))
				destructTimeCheck = missile.getAttribute("destructTime");

			try {
				destructTime = Integer.parseInt(destructTimeCheck);
			
			} catch (NumberFormatException e) {
				destructTime = -1;
				//System.out.println(e.getStackTrace());
			}

			// create the thread of the missile
			createDefenseMissile(whoLaunchMeId, targetId, destructTime);
		}
	}