According to investigators, authorities have credible information that specialist Ivan Lopez was involved in a verbal altercation right before he opened fire, killing 3 fellow soldiers at Fort Hood.
Three soldiers slain at Fort Hood identified
16 people were wounded before Lopez turned the gun on himself and took his own life.
Fort Hood commander: 'Escalating argument' preceded deadly shooting
The question everyone has on their mind is - why?
CNN's Ed Lavandera has a report on what may have motivated the deadly rampage.
soundoff (No Responses)