School policy at UCC does ban students from carrying guns into buildings except as 「authorized by law,」 but at least one student interpreted his concealed handgun license as legal authorization.
John Parker Jr., an Umpqua student and Air Force veteran, told multiple media outlets that he was armed and on campus at the time of the attack last week. Parker and other student veterans (perhaps also armed) thought about intervening. 「Luckily we made the choice not to get involved,」 Parker told MSNBC. 「We were quite a distance away from the actual building where it was happening, which could have opened us up to being potential targets ourselves.」
http://www.politico.com/magazine/story/2015/10/oregon-shooting-gun-laws-213222