from Fox News:
President Obama shared an elevator earlier this month with an armed security contractor who has three felony convictions relating to assault and battery, in the latest report of a serious violation of Secret Service security protocols.
Multiple sources confirmed to Fox News the incident, which took place in an elevator during Obama's Sept. 16 visit to the Centers for Disease Control and Prevention in Atlanta. The incident was first reported by The Washington Post and the Washington Examiner.
A supervisor fired the contractor on the spot and the man turned over his gun. This surprised the agents, who had not realized the man was armed.
The Secret Service then ran a criminal check on the man, and discovered his criminal history.
I'm sure that when the Secret Service cops ran the criminal record, they probably had a and "Aww sh*t, this isn't going to look good" moment