Their statement, reported by Politico, names the employee as an "Army official." Was she in uniform? If they shoved a service member in uniform, that too is a violation of federal law, under Title 18 United States Code Section 1389.

Here's a link to Cornell University's detailing of the law: https://www.law.cornell.edu/uscode/text/18/1389#:~:text=%C2%A7%201389-,18%20U.S.%20Code%20%C2%A7%201389%20%2D%20Prohibition%20on%20attacks%20on%20United,servicemen%20on%20account%20of%20service&text=in%20the%20case%20of%20a%20battery%2C%20or%20an%20assault%20resulting,nor%20more%20than%2010%20years.