Three of the newest cops on the street in Pennsylvania have four legs instead of two, and they're the first in the state to be certified in what they do.

They're first corrections K-9s to be trained in human detection in addition to traditional drug detection skills, and their partners are the first Pennsylvania parole agents to be certified as K-9 handlers.

The parole K-9 teams can search for drugs - and people.

The dogs and their handlers recently completed a 13-week training course and were recognized at a graduation ceremony held at the PA Department of Corrections K-9 Academy in north central PA. Pictured, L-R at the top of this story are graduates Brian Rosswog and K-9 Bo, William Stidfole and K-9 Barron, and Justin Parson and K-9 Razor.

The parole agents will return to their respective parole regions and assist in searching community corrections centers and parolee residences for drugs, and even searching for the parolees themselves when needed.