diff --git a/index.js b/index.js
index 6f12baa..3aa42f8 100644
--- a/index.js
+++ b/index.js
@@ -6,6 +6,8 @@ var Jet = function(color, size) {
   this.color = color;
   this.size = size;
 
+  this.fly = function() {
+    console.log('whoosh!');
   this.takeOff = function() {
     console.log('lift off!');
   }