Mathew Voss, 34, was shot and killed in the early morning hours of February 18, 2012, after a dispute at an after‑hours party in downtown Omaha. The same incident also left another man, Antonio Washington, wounded. Witnesses said two men fired weapons during the chaos; one witness identified Tillman T. Henderson to a police officer as one of the shooters. An officer then chased a fleeing suspect and saw him discard a gun under a vehicle. Henderson was arrested with a second firearm; forensic testing later matched bullets and casings at the scene to those two guns. A fingerprint on the discarded weapon matched Henderson, and DNA testing found Voss’s blood on Henderson’s clothing.

Investigators tied the shooting to retaliation stemming from an earlier prison assault. Voss and Henderson’s associate, Jimmy Levering, had been incarcerated together in Florida, where Voss was alleged to have stabbed and punched Levering. Text messages recovered from a phone linked to Henderson referenced meeting outside the party and the person who had stabbed Jb, with the phone’s background showing a picture of Levering. Henderson was charged and, after a jury trial, convicted of first‑degree murder of Mathew Voss and related charges; those convictions were later affirmed on appeal.

Did anyone at the party that night notice tensions between specific people before the shooting?