Stopping/removing everything then changing scene - actionscript-3

Question

I am making a shooting game and when i die it will not remove the child's it just freezes them on the screen. I would like to be able to stop all of the action then remove and change screens afterwards.
var gunLength:uint = 90;
var bullets:Array = new Array();
var bulletSpeed:uint = 20;
var baddies:Array = new Array();
var timer:Timer = new Timer(1000);
timer.addEventListener(TimerEvent.TIMER, addBaddie);
timer.start();
var lives:Number = 0;
stop();
stage.addEventListener(MouseEvent.MOUSE_MOVE, aimGun);
stage.addEventListener(MouseEvent.MOUSE_DOWN, fireGun);
stage.addEventListener(Event.ENTER_FRAME, moveObjects);
function addBaddie(evt:TimerEvent):void {
var baddie:Baddie = new Baddie();
var side:Number = Math.ceil(Math.random() * 4);
if (side == 1) {
baddie.x = Math.random() * stage.stageWidth;
baddie.y = - baddie.height;
} else if (side == 2) {
baddie.x = stage.stageWidth + baddie.width;
baddie.y = Math.random() * stage.stageHeight;
} else if (side == 3) {
baddie.x = Math.random() * stage.stageWidth;
baddie.y = stage.stageHeight + baddie.height;
} else if (side == 4) {
baddie.x = - baddie.width
baddie.y = Math.random() * stage.stageHeight;
}
baddie.angle = getAngle(baddie.x, baddie.y, gun.x, gun.y);
baddie.speed = Math.ceil(Math.random() * 15);
addChild(baddie);
baddies.push(baddie);
}
function fireGun(evt:MouseEvent) {
var bullet:Bullet = new Bullet();
bullet.rotation = gun.rotation;
bullet.x = gun.x + Math.cos(deg2rad(gun.rotation)) * gunLength;
bullet.y = gun.y + Math.sin(deg2rad(gun.rotation)) * gunLength;
addChild(bullet);
bullets.push(bullet);
}
function moveObjects(evt:Event):void {
moveBullets();
moveBaddies();
}
function moveBullets():void {
for (var i:int = 0; i < bullets.length; i++) {
var dx = Math.cos(deg2rad(bullets[i].rotation)) * bulletSpeed;
var dy = Math.sin(deg2rad(bullets[i].rotation)) * bulletSpeed;
bullets[i].x += dx;
bullets[i].y += dy;
}
}
function moveBaddies():void {
for (var i:int = 0; i < baddies.length; i++) {
var dx = Math.cos(deg2rad(baddies[i].angle)) * baddies[i].speed;
var dy = Math.sin(deg2rad(baddies[i].angle)) * baddies[i].speed;
baddies[i].x += dx;
baddies[i].y += dy;
if (baddies[i].hitTestPoint(gun.x, gun.y, true)) {
removeChild(baddies[i]);
baddies.splice(i, 1);
loseLife();
lives -= 1;
if(lives < 1){
gotoAndStop(1,"Dead");
for each(var gun:Gun in gun){
removeChild(gun)
}
lives--;
trace("Lives = " + lives);
}
} else {
checkForHit(baddies[i]);
}
}
}
function checkForHit(baddie:Baddie):void {
for (var i:int = 0; i < bullets.length; i++) {
if (baddie.hitTestPoint(bullets[i].x, bullets[i].y, true)) {
removeChild(baddie);
baddies.splice(baddies.indexOf(baddie), 1);
}
}
}
function loseLife():void {
}
function aimGun(evt:Event):void {
gun.rotation = getAngle(gun.x, gun.y, mouseX, mouseY);
var distance:Number = getDistance(gun.x, gun.y, mouseX, mouseY);
var adjDistance:Number = distance / 12 - 7;
}
function getAngle(x1:Number, y1:Number, x2:Number, y2:Number):Number {
var radians:Number = Math.atan2(y2 - y1, x2 - x1);
return rad2deg(radians);
}
function getDistance(x1:Number, y1:Number, x2:Number, y2:Number):Number {
var dx:Number = x2 - x1;
var dy:Number = y2 - y1;
return Math.sqrt(dx * dx + dy * dy);
}
function rad2deg(rad:Number):Number {
return rad * (180 / Math.PI);
}
function deg2rad(deg:Number):Number {
return deg * (Math.PI/180);
}
var target:MovieClip;
initialiseCursor();
function initialiseCursor():void {
Mouse.hide();
target = new Target();
target.x = mouseX;
target.y = mouseY;
target.mouseEnabled = false;
addChild(target);
stage.addEventListener(MouseEvent.MOUSE_MOVE, targetMove);
stage.addEventListener(MouseEvent.MOUSE_DOWN, targetDown);
stage.addEventListener(MouseEvent.MOUSE_UP, targetUp);
}
function targetMove(evt:MouseEvent):void {
target.x = this.mouseX;
target.y = this.mouseY;
}
function targetDown(evt:MouseEvent):void {
target.gotoAndStop(2);
}
function targetUp(evt:MouseEvent):void {
target.gotoAndStop(1);
}