I knew and worked with some who were involved in that fiasco.
There is a reason most call ADA "Another Damned Army", or "Alcoholics Defending America". It is the least "Combat Arms" of all the Combat Arms branches.
And yea, it is a complete and utter mess. In essence they are expected to be able to do the same kinds of things as Infantry, but your average 14X series MOS holder has about as much Infantry training as your standard admin clerk. In other words, only what they learned in boot camp.
There is a reason why I spent most of my time in Air Defense as Force Protection. In every Battery I was in, I was the only individual who had actual Infantry experience, and as the saying goes they put the "round peg in the round hole". Things that are second nature to any grunt (Range cards, planned defensive positions, reading terrain for dead spaces, and where to properly place pre-planned areas for indirect fire.
Watching for ambushes, planning counter-ambushes, things like this and more that is second nature to us is all foreign to most in the Army that never did it. And PATRIOT equipment moves damned slow. Even on a well paved freeway, the top speed is only around 45 MPH. A Battalion sized convoy from El Paso to Yuma (550 miles) is literally a full 2 days on the freeway.
And one of the things that really caused problems with the 507th was simple lack of proper PMCS on their personal weapons, and lack of training and PMCS on their crew served weapons. I was the only one when I got to my unit and was put in FP who knew how to use a T&E on the crew served weapons, as well as the only one who knew how to do headspace and timing on the M2. And my weapon was always clean and ready to go.
In the AA reports, the 507th reported almost total failure on both crew served and personal weapons.
Battle heroes of Fort Bliss maintenance company remembered - Army - Stripes
The only reason that would have happened is poor maintenance. 3 different weapons all failing at the same time, that was typical in that entire fiasco, and it was criminal that it was allowed to happen. In talking to both survivors and other senior leadership afterwards, the general consensus was that the CO and First Sergeant of that Company were almost criminally negligent in ensuring their soldiers were maintaining their weapons.
This is why the 5 years I spent with PATRIOT, most of it I was in Force Protection. I was fully trained and certified in using my launcher, as well as other equipment. But each First Sergeant when they realized I had an Infantry background put me where they thought I could do the most good. And that was generally behind the Ma Deuce, either at the main entry point when emplaced, or in the trailing vehicle of the recon element.