KANSAS CITY, Mo. (AP) — Steelers coach Mike Tomlin was brutally honest about his decision to trade disgruntled linebacker Melvin Ingram to the Chiefs, saying “we prefer volunteers as opposed to hostages” in the Pittsburgh locker room. Well, perhaps Tomlin should have weighed Kansas City’s circumstances at least a little bit. Ingram’s trade last month for a sixth-round draft pick resulted in an about-face for the Chiefs defense, which had been historically awful through the first six weeks. The Chiefs ended their failed experiment of moving Chris Jones to end, putting him back at tackle, and that changed the entire complexion of their defense. It has been downright dominant the past six weeks, helping the first-place Chiefs (10-4) carry a seven-game win streak into their important game against — you guessed it — the Steelers on Sunday at Arrowhead Stadium.