A full-time National Guardsman posing as a member of the color guard was able to bring two unloaded M16 rifles onto the Michigan Stadium field prior to the Oct. 9 game against rival Michigan State, Fox News reports.
Diane Brown, a spokeswoman for the university's department of public safety, told MyFoxDetroit.com that school officials do not believe anything was done "incorrectly or improperly by police in any of the checkpoints."