Harrison is a 6-foot-1, 190-pound prospect who was also offered by Michigan and Massachusetts. He caught 17 passes for 261 yards as a sophomore, but figures to play defensive back in college.
The 6-foot-3, 245-pound Burke is a tight end / defensive end. Virginia, James Madison and William & Mary were showing interest.
Virginia Tech now has four players on board for its 2014 class.