The G.91 was also considered by a number of nations, including Austria, Norway, and Switzerland. During early 1961, four G.91s were shipped to the United States in order to participate in a formal evaluation program for the United States Army; these aircraft were subjected to several evaluation trials, the majority of which taking place within Alabama and New Mexico. The US Army studied the use of the type as a possible Forward Air Control aircraft. However, the service subsequently relinquished all fixed-wing aircraft operations to the United States Air Force, and thus the prospective G.91 procurement was not pursued.