copy from en

The Utterly Butterly wing-walking display team at an air show at Kemble Airfield in southern England.
The aircraft are Boeing Stearman PT-17.
Taken by Adrian Pingstone in June 2004 and released to the public domain.

This work has been released into the public domain by its author, Arpingstone . This applies worldwide. In some countries this may not be legally possible; if so: Arpingstone grants anyone the right to use this work for any purpose , without any conditions, unless such conditions are required by law.