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diff --git a/docs/modules/ROOT/examples/spacewar/EnsureShipIsAlive.java b/docs/modules/ROOT/examples/spacewar/EnsureShipIsAlive.java
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+++ b/docs/modules/ROOT/examples/spacewar/EnsureShipIsAlive.java
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+/*
+
+Copyright (c) Xerox Corporation 1998-2002.  All rights reserved.
+
+Use and copying of this software and preparation of derivative works based
+upon this software are permitted.  Any distribution of this software or
+derivative works must comply with all applicable United States export control
+laws.
+
+This software is made available AS IS, and Xerox Corporation makes no warranty
+about the software, its performance or its conformity to any specification.
+
+|<---            this code is formatted to fit into 80 columns             --->|
+|<---            this code is formatted to fit into 80 columns             --->|
+|<---            this code is formatted to fit into 80 columns             --->|
+
+Ship.java
+Part of the Spacewar system.
+
+*/
+
+package spacewar;
+
+/**
+ * This aspect makes sure that the ship is alive before performing any console
+ * commands.
+ *
+ */
+aspect EnsureShipIsAlive {
+    void around (Ship ship): Ship.helmCommandsCut(ship) {
+        if ( ship.isAlive() ) {
+            proceed(ship);
+        }
+    }
+}