In Focus SPEED TO BURN With engines in full afterburner, two Boeing F-15C Eagles from the Oregon Air National Guard’s 142nd Fighter Wing fly above the Oregon Coast during a night training mission in September. The fighter wing performs the Air Sovereignty Alert missions to safeguard the Pacific Northwest. Afterburners provide an increase in engine thrust, usually for takeoff or combat situations. The pattern in the engine exhaust is referred to as shock diamonds or Mach disks. PHOTO: JIM HASELTINE/HIGH-G PRODUCTIONS 50 BOEING FRONTIERS / DECEMBER 2012–JANUARY 2013
Frontiers December 2012/January 2013 Issue
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