The Denver Broncos have been back in the building for the past five days. The veterans reported for Phase 1 of the offseason training program this past Monday, and for the remainder of May, the players will focus on strength and conditioning and team meetings, with the rookies participating in minicamp this weekend. It's the first time all the players have been together since the Broncos' disappointing loss to the New England Patriots in the AFC championship game, so they're catching up with each other, and getting to know some of the newer faces, like veteran wide receiver Jaylen Waddle, and others. We've analyzed what the Waddle trade means for Broncos fourth-year wide receiver Marvin Mims Jr., and how he fits into the offense moving forward. We've also speculated on when/if the Broncos will extend Mims, because he's entering a contract year. Along with fellow Broncos receiver Pat Bryant, Mims was at Kaiser Elementary in Denver on Friday, handing out shoes to kids, giving us a chance to hear from them.…