The Swiss, although somewhat skeptical, reacted by treating these violations of their neutrality as "accidents". The United States was warned that single aircraft would be forced down and their crews would still be allowed to seek refuge, while bomber formations in violation of airspace would be intercepted. While American politicians and diplomats tried to minimize the political damage caused by these incidents, others took a more hostile view. Some senior commanders argued that as Switzerland was "full of German sympathizers" (an unsubstantiated claim), it deserved to be bombed. General Henry H. Arnold, Commanding General of the U.S. Army Air Forces, even suggested that it was the Germans themselves who were flying captured Allied planes over Switzerland in an attempt to gain a propaganda victory.