The Broncos kicked off their voluntary offseason workout program Monday by bolstering their secondary.
Safeties Shiloh Keo and Brandian Ross both signed one-year contracts, helping to fill the voids left by David Bruton (Washington) and Omar Bolden (Chicago) in free agency.
Keo signed with the Broncos as a street free agent on Dec. 9 when injuries depleted the safety corps. A four-year veteran who spent his first three seasons in Houston, Keo appeared in four regular-season games for the Broncos saving his finest play for last. In Denver's regular-season finale against San Diego, Keo had a fourth-quarter interception of Philip Rivers to help seal the win and earn a No.