From multiple news sources:
Nov. 7, 2009 – A Rat collapsed following a training event and was pronounced dead shortly after noon today at Carilion Stonewall Jackson Hospital.
John Alexander Evans, 19, of Highland, Md., collapsed in his Barracks room after completing a 10-mile road march with other members of the Rat Class. Cadet Evans was an International Studies major and a member of the Marine ROTC program.
The cause of death will be determined by a medical examiner.
There is a follow up video from WSLS, Roanoke about the march, with the link here.
Update, 11 November: Gen Peay posted a statement on Cadet Evans on the VMI Communications web page. Follow this link to the statement.