Head-on I-80 Crash Kills 2 Des Moines Officers, 2 OthersHead-on I-80 Crash Kills 2 Des Moines Officers, 2 OthersDES MOINES, Iowa (AP) — Police say an early morning head-on crash killed two Des Moines police officers as well as a prisoner they were transporting and the other driver.Associated PressAssociated Press