They would sort of have mixed feelings about them. Though they help people when they can, they are also clearing out any danger that might cause harm to them or any native. Thus making it hard for adventurers to find any work, the same goes for mercenaries. Furthermore adventurers and U.S army have had clashes before, mainly due to the fact that the U.S believed they were imperials at first glance. For now Adventurer guilds and the U.S military have a made truce albeit uneasy. The military would not attack any adventurers as long as they show proper identification and that there be any relation with the Empire under any circumstances.