English: First Lieutenant Shawna Rochelle Ng-A-Qui (Kimbrell), USAF, an F-16 pilot with the 13th Fighter Squadron at Misawa Air Base, Japan, recently completed her first operational tour at Operation NORTHERN WATCH. The TTU-529/E Manside Tester in the foreground is used by life support personnel to test oxygen equipment on pilot's flight helmets. Operation NORTHERN WATCH is a Combined Task Force (CTF) charged with enforcing the no-fly zone north of the 36th parallel in Iraq and monitoring Iraqi compliance with UN Security Council resolution 678, 687, and 688. The northern no-fly zone is not an aggression against Iraq or a violation of its sovereignty, it is a necessary and legitimate measure to limit Iraqis aggressive air activities.