SPACE PARTNERSHIP U.S. Defense Secretary Robert M. Gates, left, and Canadian Defense Minister Peter MacKay sign the U.S. and Canada Space Situational Awareness Partnership at NATO headquarters in Brussels, Belgium, March 10, 2011. Gates is in Belgium to attend NATO defense ministers meetings. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 719877-N-ASN45-089.jpg Photo Gallery