The National Transportation Safety Board tells Big 2 that 2 of its investigators remained in Midland on Monday.
Those final on-scene N.T.S.B. investigators are slated to leave Midland on Tuesday.
On November 20th, the N.T.S.B. conducted a sight-distance test -- where investigators re-created the fatal November 15th crash.
Four military veterans were killed when a Union Pacific train plowed into a Show of Support parade float that was carrying 12 veterans, their 12 wives and 2 escorts across a railroad crossing near the intersection of South Garfield Street and West Front Street around 4:35 PM on November 15th.
N.T.S.B. investigators tell Big 2 that their preliminary report should be releasing a a couple weeks.
On average, it takes N.T.S.B. officials anywhere from 12 to 18 months to fully complete an investigation into a fatal crash of this magnitude.