2011年9月29日，米拉玛航空展期间，一架早期 N2S-3 初级双翼教练机在进行飞行前准备，这种飞机经常在航展上表演“机翼行走”特技。（An N2S Stearman Biplane waits to take off during practice before the annual Marine Corps Air Station Miramar Air Show Sept. 29. Dozens of aircraft pilots spent the days prior to the annual 2011 MCAS Miramar Air Show making final preparations and moving aircraft into place. The theme for this year’s show is “A Salute to San Diego: Birthplace of Naval Aviation," honoring the centennial of naval aviation.）