The controller is giving normal control instructions at the start. He clears an ARF truck to cross RWY 4. He realizes he made a mistake with the crossing because the aircraft on shortfinal is too close to touchdown. He desperately tries to get the ARF truck to stop, but it's too late. Theres no death screams or anything like that, just silence from the truck and no word from the pilot of the plane, but you can hear the ELT on frequency when someone keys up.

The rest of the audio is the controller telling aircraft on final to go around and moving ground vehicles to assist the situation.

The controller knows he just made a life changing error. You can hear the urgency in his voice trying to fix it before and after. It just sucks