Using these services, most virtual airlines regularly host online events where virtual pilots can participate in group flights with hundreds of other pilots.
About 100 pilots participated in the fly-in for celebrating '100 years human flight' in May 1991.
Other pilots participated, and when news reached the US, children all over the country sent in their own candy to help out.
In 2009, 13.424 pilots worldwide participated in a contest sponsored by a German aviation magazine, 'Aerokurier', though other countries also operate their own national 'ladders'.
On this occasion, four pilots of the Kosciuszko Squadron participated in an air show.
In the second and final round, only three pilots participated.
A heightened level of situational awareness is necessary, and student pilots or pilots not familiar with LAHSO should not participate in the program.
Approximately 130-135 Polish pilots participated in the fighting in France, achieving some 50-55 victories at a loss of 15-25 men (sources vary slightly).
Over 12000 pilots participated in the OLC worldwide in 2006.
VT-8 pilots and air crew also participated in the ground defense of Henderson Field, assisting to fend off Japanese infantry attacks on 24-26 October 1942.
