Four Gulfstream business jets grace the Le Bourget static display this week, illustrating the high level of innovation.

Since leaving the German motor glider company that continues to bear his name, Dr. Reiner Stemme has devoted his energies to utility air systems for surveillance and monitoring, generating several designs based on the sailplane formula for two related firms.

U.S. aerospace has the largest presence of any at this year’s Paris Air Show, totaling some 350 civil and defense manufacturers and suppliers.