rampage of that army post. the alleged shooter ivan lopez killing three people and wounding 16 before turning the gun on himself. rick levinthal has been there since this story broke at ft. hood. joining me live. let me ask you about the latest on what they learned about what may have sparked this shooting. it s much quieter outside the base. there are no news conferences scheduled. we are expected to hear from a congressman less than an hour from now. we are learning more about the circumstances that preceded the shooting wednesday afternoon. there was some verbal dispute between specialistine lopez and members of his unit, trns portation battalion. according to the new york times, the argument began over a leave request. lopez had been seeking time off to attend family matters and