He enrolled at Shippensburg University in 2001 with the intention of competing in track and field, however Kilmer's eventual decision to study kinesiology made a transfer to Penn State necessary.
At Penn State, Kilmer joined the Nittany Lions football program as a walk-on, eventually working his way into a starting position.
Kilmer was selected by the Cincinnati Bengals in the seventh round (209th overall) of the 2006 NFL draft.
[2] He was listed as a safety on the Bengals' roster but also spent time learning cornerback and wide receiver.
He scored his first NFL touchdown on Week 11 against the New Orleans Saints, intercepting a Drew Brees pass and returning it 52 yards.