Trevor R Johnson @trevor-r-johnson Active 7 years, 9 months ago ActivityProfileSites 1Friends 0Groups 1 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Yifei Liu and Trevor R Johnson are now friends 9 years, 2 months ago Trevor R Johnson @trevor-r-johnson View Profile CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio