In March 1994, as he arrived to work and got out his car, Matt Flores was shot in the back of the head and killed instantly. His killer has never been caught. Security cameras covering the employee card park for Applied Materials had an unfortunate blind spot in the area he parked so the deed itself was not filmed, but police have made a big thing out of a white Ford Explorer seen circling in the car park in the minutes leading up to the attack and seem to believe that this was the killer. However, rather oddly, the police have never released this footage to the public but instead relied on a reconstruction for tv. This is the first of a few oddities regarding this case.
No motive has ever been established. 3 of the 4 items at the top of the suspect list seem to turn up no leads:
– there is no mention of any marriage problems, nor of any problems with extended family or friends (they had just moved to California from Rhode Island so had no real social circle yet).
– Applied Materials seem like a run-of-the-mill computer chip manufacturer with regular business (ie not military/intelligence contracts), certainly normal for the Santa Clara area.
– He had only been at the job for 9 days so was unlikely to have enraged even the most psychotic of colleagues enough for this kind of retaliation.

Which leaves point 4 – his prior job in the military. This rings alarm bells for 4 reasons:
1) The impression is that the murder was a professional hit (killer waited for his target, single shot to the back of the head, not one of the 20 other people in the car park at the time claims to have seen the killer).
2)The police claim that, when pressing the military for Flores’ employment records, they claim his papers have been lost and there is no record of what role he played (seems highly, highly unlikely).
3) The police did find out one piece of information from the army – a sergeant under Flores’ command died under suspicious circumstances (probable murder) a year before Flores.
4) The odd police decision to hold back the film from the parking area, which seems like a strange decision if there’s no violence occurring on-screen (ie were their hands tied by higher powers).

The lack of witnesses here is confusing. It’s prime commuting time, with 20 people known to be in the car park when the shot was fired. The prime witness says she saw his body slump to the ground, but didn’t see anyone walking away? No mention of anyone running to a car, or a car speeding off, nothing like that. The only description of the act itself is a ‘shot to the back of the head’ – but this could have been made by a rifle from one of many surrounding buildings or car parks (leaving the Ford Explorer as a red herring).
Finally, a professional hit seems at odds with the location and potential witnesses (unless the long range shot is correct), why not get him at home before he left for work?
This is a good article covering the most important points:
https://truecrimediva.com/matt-flores/